Today's Medical Fact
Eating breakfast helps to burn calories throughout the day.
Click one of the letters above to be taken to a page of all terms beginning with that letter.
- The abdomen is the area of the body between the diaphragm and pelvis that contains many organs including the stomach, small intestine, large intestine, pancreas, liver, gallbladder, and spleen.
- Acid Reflux
- Acid Reflux is a disease that causes heartburn when the lower esophageal sphincter (LES) muscle relaxes and acid from the stomach flows up into the esophagus.
- ADD, Attention Deficit Disorder, is a behavioral disorder in which a person has difficulty with the ability to focus and maintain attention.
- ADHD, Attention Deficit and Hyperactivity Disorder, is a behavioral disorder characterized by difficulties concentrating, poor impulse control, and hyperactivity that are inappropriate for a person's age. A form of Attention Deficit Disorder (ADD), in which hyperactivity is present.
- Adipose Tissue
- Adipose tissue is fat tissue in the body.
- Alzheimer's Disease
- Alzheimer's Disease (AD) is a progressive and incurable disease that destroys brain cells and affects mental ability, memory, behavior, and muscular coordination. Alzheimer's Disease is the most common cause of dementia and primarily occurs in late middle age. Complete progression of the AD can occur within a few months or over several years.
- An aneurysm is a bulging section in a blood vessel wall that has become thin and weak. Aneurysms rarely cause symptoms, but if an aneurysm ruptures (bursts), the bleeding out may result in death if not treated immediately.
- Angina is the feeling of pain or pressure in the chest. Angina is a common symptom of coronary heart disease.
- An arrhythmia is a disturbance in the regular rate and rhythm of the heartbeat.
- Arteriosclerosis is a condition that refers to the thickening and toughening of the artery walls. The arteries become less elastic as the disease progresses. Also referred to as hardening of the arteries. From the Greek word sclerosis (hardness).
- An artery is a blood vessel that delivers oxygenated blood to the body.
- Arthritis is inflammation of the joints. It is a general term referring to more than 100 different types of arthritis.
- Asthma is a lung condition in which constriction of the airways and mucus secretion can cause wheezing, coughing, and difficulty breathing. Asthma is often due to an allergic reaction.
- Atherosclerosis is the condition in which the arteries become clogged from plaque that builds up over time on the blood vessel walls. From the Greek words athero (gruel or paste) and sclerosis (hardness). Atherosclerosis is a form of arteriosclerosis.
- Atrial Fibrillation
- Atrial Fibrillation (A-Fib) is the most common form of arrhythmia that occurs in the heart. The atria (upper chambers of the heart) beat in a very rapid and irregular pattern and do not effectively pump blood into the ventricles (lower chambers of the heart). Atrial fibrillation is not usually life-threatening in itself, although it may cause lightheadedness, heart palpitations ("racing" heart) and increases the risk of blood clots and stroke. Atrial Fibrillation is usually treated with medications.
- Atrium is one of the two upper chambers of the heart where blood collects before sending it to a ventricle. The right atrium receives unoxygenated blood from the body and sends it to the right ventricle. The left atrium receives oxygenated blood from the lungs and sends it to the left ventricle.
- Attention Deficit and Hyperactivity Disorder
- Attention Deficit and Hyperactivity Disorder (ADHD) is a behavioral disorder characterized by difficulties concentrating, poor impulse control, and hyperactivity that are inappropriate for a person's age. A form of Attention Deficit Disorder (ADD), in which hyperactivity is present.
- Attention Deficit Disorder
- Attention Deficit Disorder (ADD) is a behavioral disorder in which a person has difficulty with the ability to focus and maintain attention.
- Auras are sensations and visual changes that may precede or accompany a migraine headache, including flashes of light, blind spots, numbness or tingling, or a feeling of heaviness.
- Autism is a developmental disorder that begins in early childhood, characterized by language impairment, emotional detachment, and abnormal behavior patterns, such as repetition of specific movements and excessive focus on certain objects.