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Definition Angina is chest pain, discomfort, or tightness that occurs when an area of the heart muscle receives decreased blood oxygen supply. It is not a disease itself, but rather a likely symptom of coronary artery disease, the most common type of heart disease. The lack of oxygen-rich blood to …

Definition Albinism includes a group of inherited disorders that are characterized by little or no production of the pigment melanin. The type and amount of melanin your body produces determines the color of your skin, hair and eyes. Most people with albinism are sensitive to sun exposure and are at …

Definition Agnosia is a rare neurological disorder which causes the loss of ability to recognize any familiar person, object and sounds or the ability to comprehend the meaning of any object or difficulty in processing sensory information, such as touch, sound, and light even in the presence of intact senses. …

Definition Achondroplasia is a bone growth disorder that causes disproportionate dwarfism. Dwarfism is defined as a condition of short stature as an adult. People with achondroplasia are short in stature with a normal-sized torso and short limbs. It’s the most common type of disproportionate dwarfism. History of Achondroplasia  Achondroplasia was …

Definition Avian influenza is also called as Bird flu. Avian influenza refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses. These viruses occur naturally among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. Avian flu viruses do …

Introduction ADHD (Attention Deficit Hyperactivity Disorder) is a brain disorder marked by an ongoing pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development. ADHD has three sub-types Predominantly hyperactive-impulsive Most symptoms (six or more) are in the hyperactivity-impulsivity categories. Fewer than six symptoms of inattention are present, although …

Introduction AAA syndrome is a rare autosomal recessive disorder characterized by adrenocorticotropic hormone (ACTH)-resistant adrenal insufficiency, alacrima and achalasia. Primary adrenal insufficiency or also known as Addison disease, is caused by abnormal function of the small hormone-producing glands on top of each kidney (adrenal glands). The main features of Addison …

What is Achalasia? Achalasia is a serious condition that affects your esophagus. The esophagus is the tube that carries food from the throat to the stomach. The lower esophageal sphincter (LES) is a muscular ring that closes off the esophagus from the stomach. If you have achalasia, your LES fails …