Cause you - Dec 14, 2022 · Coma is a state of prolonged loss of consciousness. It can have a variety of causes, including traumatic head injury, stroke, brain tumor, or drug or alcohol intoxication. A coma may even be caused by an underlying illness, such as diabetes or an infection. Coma is a medical emergency. Quick action is needed to preserve life and brain function.

 
Causes. Hypothermia occurs when your body loses heat faster than it produces it. The most common causes of hypothermia are exposure to cold-weather conditions or cold water. But prolonged exposure to any environment colder than your body can lead to hypothermia if you aren't dressed appropriately or can't control the conditions.. Maverick

Nov 15, 2022 · Most reactions to common food allergens — peanuts or shellfish, for example — happen within minutes after you are exposed to them. In alpha-gal syndrome, reactions usually appear about 3 to 6 hours after you are exposed. Foods that can cause a reaction include: Red meat, such as beef, pork or lamb. Organ meats. Oct 1, 2022 · Symptoms. Signs and symptoms of E. coli O157:H7 infection usually begin three or four days after exposure to the bacteria. But you may become ill as soon as one day after exposure to more than a week later. Signs and symptoms include: Diarrhea, which may range from mild and watery to severe and bloody. Stomach cramping, pain or tenderness. Aug 22, 2023 · Causes. A number of diseases and conditions can cause diarrhea, including: Viruses. Viruses that can cause diarrhea include Norwalk virus (also known as norovirus), enteric adenoviruses, astrovirus, cytomegalovirus and viral hepatitis. Rotavirus is a common cause of acute childhood diarrhea. Nov 30, 2022 · An accident or attack that causes radiation sickness would no doubt cause a lot of attention and public concern. If such an event occurs, monitor radio, television or online reports to learn about emergency instructions for your area. If you know you've been overexposed to radiation, seek emergency medical care. Cause definition, a person or thing that acts, happens, or exists in such a way that some specific thing happens as a result; the producer of an effect: You have been the cause of much anxiety.Symptoms. Edema in foot and ankle Enlarge image. Symptoms of edema include: Swelling or puffiness of the tissue right under the skin, especially in legs or arms. Stretched or shiny skin. Skin that holds a dimple, also known as pitting, after it's been pressed for a few seconds. Swelling of the belly, also called the abdomen, so that it's bigger ...Jul 16, 2021 · Blocked or stuffy (congested) nose causing difficulty breathing through your nose. Pain, tenderness and swelling around your eyes, cheeks, nose or forehead. Reduced sense of smell and taste. Other signs and symptoms can include: Ear pain. Headache. Aching in your upper jaw and teeth. Cough or throat clearing. Signs and symptoms associated with dysphagia can include: Pain while swallowing. Inability to swallow. A sensation of food getting stuck in the throat or chest or behind the breastbone (sternum) Drooling. Hoarseness. Food coming back up (regurgitation) Frequent heartburn. Food or stomach acid backing up into the throat.Causes. A number of diseases and conditions can cause diarrhea, including: Viruses. Viruses that can cause diarrhea include Norwalk virus (also known as norovirus), enteric adenoviruses, astrovirus, cytomegalovirus and viral hepatitis. Rotavirus is a common cause of acute childhood diarrhea.A vaginal yeast infection is a fungal infection that causes irritation, discharge and intense itchiness of the vagina and the vulva — the tissues at the vaginal opening. Also called vaginal candidiasis, vaginal yeast infection affects up to 3 out of 4 women at some point in their lifetimes. Many women experience at least two episodes.Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger.Peripheral neuropathy happens when the nerves that are located outside of the brain and spinal cord (peripheral nerves) are damaged. This condition often causes weakness, numbness and pain, usually in the hands and feet. It also can affect other areas and body functions including digestion and urination. The peripheral nervous system sends ...cause: 1 n events that provide the generative force that is the origin of something “they are trying to determine the cause of the crash” Types: show 12 types... hide 12 types... antecedent a preceding occurrence or cause or event aetiology , etiology the cause of a disease factor anything that contributes causally to a result producer ...Aug 5, 2022 · The signs and symptoms of benign paroxysmal positional vertigo (BPPV) may include: Dizziness. A sense that you or your surroundings are spinning or moving (vertigo) A loss of balance or unsteadiness. Nausea. Vomiting. The signs and symptoms of BPPV can come and go and commonly last less than one minute. Episodes of BPPV can disappear for some ... Sunburn symptoms can include: Inflamed skin, which looks pink or red on white skin and may be harder to see on brown or Black skin. Skin that feels warm or hot to the touch. Pain, tenderness and itching. Swelling. Small, fluid-filled blisters, which may break. Headache, fever, nausea and fatigue, if the sunburn is severe.Jul 16, 2021 · Blocked or stuffy (congested) nose causing difficulty breathing through your nose. Pain, tenderness and swelling around your eyes, cheeks, nose or forehead. Reduced sense of smell and taste. Other signs and symptoms can include: Ear pain. Headache. Aching in your upper jaw and teeth. Cough or throat clearing. Mar 29, 2023 · Symptoms. Essential tremor symptoms: Begin gradually, and usually are more noticeable on one side of the body. Worsen with movement. Usually occur in the hands first, affecting one hand or both hands. Can include a "yes-yes" or "no-no" motion of the head. May be aggravated by emotional stress, fatigue, caffeine or temperature extremes. T he Lovers puts a big question to its audience, and how you respond is likely to determine whether you find this spiky romcom wonkily charming or amoral and grating. A mildly famous man meets a ...Jul 7, 2023 · Show transcript. A migraine is a headache that can cause severe throbbing pain or a pulsing sensation, usually on one side of the head. It's often accompanied by nausea, vomiting, and extreme sensitivity to light and sound. Migraine attacks can last for hours to days, and the pain can be so bad that it interferes with your daily activities. Symptoms. Edema in foot and ankle Enlarge image. Symptoms of edema include: Swelling or puffiness of the tissue right under the skin, especially in legs or arms. Stretched or shiny skin. Skin that holds a dimple, also known as pitting, after it's been pressed for a few seconds. Swelling of the belly, also called the abdomen, so that it's bigger ...Signs and symptoms of balance problems include: Sense of motion or spinning (vertigo) Feeling of faintness or lightheadedness (presyncope) Loss of balance or unsteadiness. Falling or feeling like you might fall. Feeling a floating sensation or dizziness. Vision changes, such as blurriness. Confusion.Signs and symptoms of balance problems include: Sense of motion or spinning (vertigo) Feeling of faintness or lightheadedness (presyncope) Loss of balance or unsteadiness. Falling or feeling like you might fall. Feeling a floating sensation or dizziness. Vision changes, such as blurriness. Confusion.Parkinson's symptoms may include: Tremor. Rhythmic shaking, called tremor, usually begins in a limb, often your hand or fingers. You may rub your thumb and forefinger back and forth. This is known as a pill-rolling tremor. Your hand may tremble when it's at rest. The shaking may decrease when you are performing tasks.A vaginal yeast infection is a fungal infection that causes irritation, discharge and intense itchiness of the vagina and the vulva — the tissues at the vaginal opening. Also called vaginal candidiasis, vaginal yeast infection affects up to 3 out of 4 women at some point in their lifetimes. Many women experience at least two episodes.Dec 15, 2022 · Causes include age, medications, and vasculitis. A fall, blow, or anything else that exerts sudden high pressure on the skin can cause a bruise. Very forceful blows can damage bones, causing deep ... Nov 16, 2022 · Gout is a common and complex form of arthritis that can affect anyone. It's characterized by sudden, severe attacks of pain, swelling, redness and tenderness in one or more joints, most often in the big toe. An attack of gout can occur suddenly, often waking you up in the middle of the night with the sensation that your big toe is on fire. Multiple sclerosis. Diabetes. Age. Overactive thyroid. Perimenopause. Menopause. Summary. Sweating more or feeling hotter than usual can be due to medication, hormonal changes, stress, or an ...Jul 14, 2023 · Symptoms of coronavirus disease 2019 (COVID-19) may appear 2 to 14 days after exposure. This time after exposure and before having symptoms is called the incubation period. You can still spread COVID-19 before you have symptoms. This is called presymptomatic transmission. Common symptoms can include: Fever. Bacterial or viral infection. You have a cold or the flu. You’re feeling worn down and tired. That’s because your body is fighting the infection and it’s putting a strain on your immune ...Oct 14, 2022 · Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems. Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger.noun uk / kɔːz / us / kɑːz / cause noun (REASON) Add to word list B2 [ C or U ] the reason why something, especially something bad, happens: The police are still trying to establish the cause of the fire. She had died of natural causes. I wouldn't tell you without ( good) cause (= if there was not a (good) reason).Emotional and behavioral symptoms. Signs and symptoms of social anxiety disorder can include constant: Fear of physical symptoms that may cause you embarrassment, such as blushing, sweating, trembling or having a shaky voice. Avoidance of doing things or speaking to people out of fear of embarrassment.Apr 6, 2023 · Overview. Heat exhaustion is a condition that happens when your body overheats. Symptoms may include heavy sweating and a rapid pulse. Heat exhaustion is one of three heat-related illnesses, with heat cramps being the mildest and heatstroke being the most serious. Causes of heat illness include exposure to high temperatures, particularly when ... noun uk / kɔːz / us / kɑːz / cause noun (REASON) Add to word list B2 [ C or U ] the reason why something, especially something bad, happens: The police are still trying to establish the cause of the fire. She had died of natural causes. I wouldn't tell you without ( good) cause (= if there was not a (good) reason). Symptoms. Signs and symptoms of bruxism may include: Teeth grinding or clenching, which may be loud enough to wake up your sleep partner. Teeth that are flattened, fractured, chipped or loose. Worn tooth enamel, exposing deeper layers of your tooth. Increased tooth pain or sensitivity.If you have asthma or cystic fibrosis, see your doctor whenever you notice a change in your breathing. Although aspergillosis may not be the cause, it's important to have breathing problems evaluated. If you have a weakened immune system and develop an unexplained fever, shortness of breath or a cough that brings up blood, get immediate medical ...A muscle cramp is a sudden, unexpected tightening of one or more muscles. Sometimes called a charley horse, a muscle cramp can be very painful. Exercising or working hard, especially in heat, can lead to muscle cramps. Some medicines and illnesses also might cause muscle cramps. Muscle cramps aren't usually harmful.Dec 15, 2022 · Causes include age, medications, and vasculitis. A fall, blow, or anything else that exerts sudden high pressure on the skin can cause a bruise. Very forceful blows can damage bones, causing deep ... Gout is a common and complex form of arthritis that can affect anyone. It's characterized by sudden, severe attacks of pain, swelling, redness and tenderness in one or more joints, most often in the big toe. An attack of gout can occur suddenly, often waking you up in the middle of the night with the sensation that your big toe is on fire.Definition of cause as in to create to be the cause of (a situation, action, or state of mind) the ice storm caused a massive power outage Synonyms & Similar Words Relevance create bring generate prompt produce do work induce spawn yield effect make invoke effectuate result (in) bring about catalyze draw on translate (into) encourage found promoteJan 6, 2023 · Hemochromatosis (he-moe-kroe-muh-TOE-sis) causes your body to absorb too much iron from the food you eat. Excess iron is stored in your organs, especially your liver, heart and pancreas. Too much iron can lead to life-threatening conditions, such as liver disease, heart problems and diabetes. There are a few types of hemochromatosis, but the ... Signs or symptoms of gas or gas pains include: Burping. Passing gas. Pain, cramps or a knotted feeling in your abdomen. A feeling of fullness or pressure in your abdomen (bloating) An observable increase in the size of your abdomen (distention) Burping is normal, particularly during or right after a meal. Most people pass gas up to 20 times a day.Definition of cause as in to create to be the cause of (a situation, action, or state of mind) the ice storm caused a massive power outage Synonyms & Similar Words Relevance create bring generate prompt produce do work induce spawn yield effect make invoke effectuate result (in) bring about catalyze draw on translate (into) encourage found promoteWhen a cavity is just beginning, you may not have any symptoms at all. As the decay gets larger, it may cause signs and symptoms such as: Toothache, spontaneous pain or pain that occurs without any apparent cause. Tooth sensitivity. Mild to sharp pain when eating or drinking something sweet, hot or cold.Aug 10, 2017 · Symptoms. Signs and symptoms of bruxism may include: Teeth grinding or clenching, which may be loud enough to wake up your sleep partner. Teeth that are flattened, fractured, chipped or loose. Worn tooth enamel, exposing deeper layers of your tooth. Increased tooth pain or sensitivity. Nov 23, 2021 · Possible causes of taste disorders and a loss of taste can include: upper respiratory infections, such as the common cold. COVID-19. sinus infections. middle ear infections. poor oral hygiene and ... Common signs and symptoms of GERD include: A burning sensation in your chest (heartburn), usually after eating, which might be worse at night or while lying down. Backwash (regurgitation) of food or sour liquid. Upper abdominal or chest pain. Trouble swallowing (dysphagia) Sensation of a lump in your throat. If you have nighttime acid reflux ...If you have epilepsy, you're 13 to 19 times more likely to drown while swimming or bathing than the rest of the population because of the possibility of having a seizure while in the water. Car accidents. A seizure that causes either loss of awareness or control can be dangerous if you're driving a car or operating other equipment.Gastritis doesn't always cause signs and symptoms. When to see a doctor. Nearly everyone has had a bout of indigestion and stomach irritation. Most cases of indigestion are short-lived and don't require medical care. See your health care provider if you have signs and symptoms of gastritis for a week or longer.When a cavity is just beginning, you may not have any symptoms at all. As the decay gets larger, it may cause signs and symptoms such as: Toothache, spontaneous pain or pain that occurs without any apparent cause. Tooth sensitivity. Mild to sharp pain when eating or drinking something sweet, hot or cold.Anemia symptoms depend on the cause and how bad the anemia is. Anemia can be so mild that it causes no symptoms at first. But symptoms usually then occur and get worse as the anemia gets worse. If another disease causes the anemia, the disease can mask the anemia symptoms. Then a test for another condition might find the anemia.Feb 17, 2022 · Symptoms can last for days, weeks or even longer. Common symptoms after a concussive traumatic brain injury are headache, loss of memory (amnesia) and confusion. The amnesia usually involves forgetting the event that caused the concussion. Physical signs and symptoms of a concussion may include: Headache. Ringing in the ears. May 4, 2022 · Possible causes, with diabetes. If you have diabetes, you might not make insulin (type 1 diabetes) or you might be less responsive to it (type 2 diabetes). As a result, glucose builds up in the bloodstream and can reach dangerously high levels. To correct this problem, you might take insulin or other medications to lower blood sugar levels. Oct 22, 2022 · A number of things can cause a rapid heart rate (tachycardia). If you feel like your heart is beating too fast, make an appointment to see a health care provider. Seek immediate medical help if you have shortness of breath, weakness, dizziness, lightheadedness, fainting or near fainting, and chest pain or discomfort. Ongoing gum irritation and swelling, called inflammation, can cause periodontitis. Eventually this causes deep pockets to form between your gums and teeth. These pockets fill with plaque, tartar and bacteria and become deeper over time. If not treated, these deep infections cause a loss of tissue and bone. Eventually you may lose one or more teeth.Dec 14, 2022 · Coma is a state of prolonged loss of consciousness. It can have a variety of causes, including traumatic head injury, stroke, brain tumor, or drug or alcohol intoxication. A coma may even be caused by an underlying illness, such as diabetes or an infection. Coma is a medical emergency. Quick action is needed to preserve life and brain function. If you have epilepsy, you're 13 to 19 times more likely to drown while swimming or bathing than the rest of the population because of the possibility of having a seizure while in the water. Car accidents. A seizure that causes either loss of awareness or control can be dangerous if you're driving a car or operating other equipment.Symptoms. Signs and symptoms caused by cancer will vary depending on what part of the body is affected. Some general signs and symptoms associated with, but not specific to, cancer, include: Fatigue. Lump or area of thickening that can be felt under the skin. Weight changes, including unintended loss or gain.C. difficile can cause the colon to become inflamed and sometimes form patches of raw tissue that can bleed or produce pus. Signs and symptoms of severe infection include: Watery diarrhea as often as 10 to 15 times a day. Abdominal cramping and pain, which may be severe. Rapid heart rate. Causes. Hypothermia occurs when your body loses heat faster than it produces it. The most common causes of hypothermia are exposure to cold-weather conditions or cold water. But prolonged exposure to any environment colder than your body can lead to hypothermia if you aren't dressed appropriately or can't control the conditions.Aug 30, 2023 · Infections and immune disorders. Dementia-like symptoms can result from a fever or other side effects of the body's attempt to fight off an infection. Multiple sclerosis and other conditions caused by the body's immune system attacking nerve cells also can cause dementia. Metabolic or endocrine problems. Peripheral neuropathy happens when the nerves that are located outside of the brain and spinal cord (peripheral nerves) are damaged. This condition often causes weakness, numbness and pain, usually in the hands and feet. It also can affect other areas and body functions including digestion and urination. The peripheral nervous system sends ... Overview. Heat exhaustion is a condition that happens when your body overheats. Symptoms may include heavy sweating and a rapid pulse. Heat exhaustion is one of three heat-related illnesses, with heat cramps being the mildest and heatstroke being the most serious. Causes of heat illness include exposure to high temperatures, particularly when ...Symptoms can last for days, weeks or even longer. Common symptoms after a concussive traumatic brain injury are headache, loss of memory (amnesia) and confusion. The amnesia usually involves forgetting the event that caused the concussion. Physical signs and symptoms of a concussion may include: Headache. Ringing in the ears.Aug 5, 2022 · The signs and symptoms of benign paroxysmal positional vertigo (BPPV) may include: Dizziness. A sense that you or your surroundings are spinning or moving (vertigo) A loss of balance or unsteadiness. Nausea. Vomiting. The signs and symptoms of BPPV can come and go and commonly last less than one minute. Episodes of BPPV can disappear for some ... If a kidney stone becomes lodged in the ureters, it may block the flow of urine and cause the kidney to swell and the ureter to spasm, which can be very painful. At that point, you may experience these symptoms: Severe, sharp pain in the side and back, below the ribs. Pain that radiates to the lower abdomen and groin.Peripheral neuropathy happens when the nerves that are located outside of the brain and spinal cord (peripheral nerves) are damaged. This condition often causes weakness, numbness and pain, usually in the hands and feet. It also can affect other areas and body functions including digestion and urination. The peripheral nervous system sends ... Other dehydration causes include: Diarrhea, vomiting. Severe, acute diarrhea — that is, diarrhea that comes on suddenly and violently — can cause a tremendous loss of water and electrolytes in a short amount of time. If you have vomiting along with diarrhea, you lose even more fluids and minerals. Fever.Jan 6, 2023 · Hemochromatosis (he-moe-kroe-muh-TOE-sis) causes your body to absorb too much iron from the food you eat. Excess iron is stored in your organs, especially your liver, heart and pancreas. Too much iron can lead to life-threatening conditions, such as liver disease, heart problems and diabetes. There are a few types of hemochromatosis, but the ... Jan 6, 2022 · Try to make meals relaxed occasions; eating when you're stressed or on the run increases the air you swallow. Avoid carbonated drinks and beer. They release carbon dioxide gas. Skip the gum and hard candy. When you chew gum or suck on hard candy, you swallow more often than normal. Part of what you're swallowing is air. Don't smoke. Jan 11, 2023 · Factors you can control — such as inactivity, obesity and an unhealthy diet — contribute to harmful cholesterol and triglyceride levels. Factors beyond your control might play a role, too. For example, your genetic makeup might make it more difficult for your body to remove LDL cholesterol from your blood or break it down in the liver. Oct 15, 2022 · Symptoms. At first, the flu may seem like a common cold with a runny nose, sneezing and sore throat. Colds usually develop slowly. But the flu tends to come on suddenly. And while a cold can be miserable, you usually feel much worse with the flu. Common symptoms of the flu include: Fever. Aching muscles. Most ovarian cysts cause no symptoms and go away on their own. But a large ovarian cyst can cause: Pelvic pain that may come and go. You may feel a dull ache or a sharp pain in the area below your bellybutton toward one side. Fullness, pressure or heaviness in your belly (abdomen). Bloating. When to see a doctor. Get immediate medical help if ...May 11, 2023 · Anemia symptoms depend on the cause and how bad the anemia is. Anemia can be so mild that it causes no symptoms at first. But symptoms usually then occur and get worse as the anemia gets worse. If another disease causes the anemia, the disease can mask the anemia symptoms. Then a test for another condition might find the anemia. Peripheral neuropathy happens when the nerves that are located outside of the brain and spinal cord (peripheral nerves) are damaged. This condition often causes weakness, numbness and pain, usually in the hands and feet. It also can affect other areas and body functions including digestion and urination. The peripheral nervous system sends ...Signs and symptoms of stroke include: Trouble speaking and understanding what others are saying. You may experience confusion, slur words or have difficulty understanding speech. Paralysis or numbness of the face, arm or leg. You may develop sudden numbness, weakness or paralysis in the face, arm or leg.

Feb 11, 2020 · Multiple sclerosis. Diabetes. Age. Overactive thyroid. Perimenopause. Menopause. Summary. Sweating more or feeling hotter than usual can be due to medication, hormonal changes, stress, or an ... . Xemhfsyk

cause you

Nov 30, 2022 · Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger. Your doctor can use this information to help you identify the cause of your oversleeping and suggest a treatment plan. Regardless of the cause of your oversleeping, you can implement healthy sleep tips to improve your sleep habits: Set a Regular Sleep Schedule: Go to bed and wake up at the same time each day. This helps you avoid sleep loss and ...Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger.Symptoms. At first, the cloudiness in your vision caused by a cataract may affect only a small part of the eye's lens and you may be unaware of any vision loss. As the cataract grows larger, it clouds more of your lens and distorts the light passing through the lens. This may lead to more-noticeable symptoms.a. : a reason for an action or condition : motive. b. : something that brings about an effect or a result. trying to find the cause of the accident. c. : a person or thing that is the occasion of an action or state. a cause for celebration. especially : an agent that brings something about. Apr 6, 2023 · Overview. Heat exhaustion is a condition that happens when your body overheats. Symptoms may include heavy sweating and a rapid pulse. Heat exhaustion is one of three heat-related illnesses, with heat cramps being the mildest and heatstroke being the most serious. Causes of heat illness include exposure to high temperatures, particularly when ... Causes of atrial fibrillation. Problems with the heart's structure are the most common cause of atrial fibrillation (AFib). Heart diseases and health problems that can cause AFib include: A heart problem you're born with, called a congenital heart defect. A problem with the heart's natural pacemaker, called sick sinus syndrome.If a kidney stone becomes lodged in the ureters, it may block the flow of urine and cause the kidney to swell and the ureter to spasm, which can be very painful. At that point, you may experience these symptoms: Severe, sharp pain in the side and back, below the ribs. Pain that radiates to the lower abdomen and groin.If you have asthma or cystic fibrosis, see your doctor whenever you notice a change in your breathing. Although aspergillosis may not be the cause, it's important to have breathing problems evaluated. If you have a weakened immune system and develop an unexplained fever, shortness of breath or a cough that brings up blood, get immediate medical ...Hyperthyroidism sometimes looks like other health problems. That can make it hard to diagnose. It can cause many symptoms, including: Losing weight without trying. Fast heartbeat, a condition called tachycardia. Irregular heartbeat, also called arrhythmia. Pounding of the heart, sometimes called heart palpitations. Increased hunger.Causes of atrial fibrillation. Problems with the heart's structure are the most common cause of atrial fibrillation (AFib). Heart diseases and health problems that can cause AFib include: A heart problem you're born with, called a congenital heart defect. A problem with the heart's natural pacemaker, called sick sinus syndrome..

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