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What is Addison disease in a child? Addison disease, also called primary adrenal insufficiency, is when the adrenal glands don’t make enough of the “stress” hormone called cortisol. Cortisol controls…

What is acoustic neuroma? Acoustic neuroma is a rare tumor. It’s not cancer. It grows slowly from an overproduction of Schwann cells and is also called a vestibular schwannoma. The…

What is acne in a child? Acne is a disorder of the hair follicles and sebaceous glands. Hair follicles are the areas around the base or root of each hair. Sebaceous…

What is acne? Acne is a disorder of the hair follicles and oil glands (sebaceous glands). The oil glands secrete oils (sebum) to keep the skin moist. When the glands…

Does this test have other names? Acid-fast bacillus smear and culture, AFB smear and culture, TB culture and sensitivity, mycobacterial culture What is this test? An acid-fast bacteria (AFB) culture…

What is achondroplasia in a child? Achondroplasia is the most common type of rare genetic bone disorder. The strong, flexible tissue called cartilage is not made into bone as normal.…

What is Achilles tendon repair surgery? Achilles tendon repair surgery is a type of surgery to fix a damaged Achilles tendon. The Achilles tendon is a strong, fibrous cord in…

What are Achilles tendon injuries? The Achilles tendon is a fibrous band of tissue that links the muscles in your calf to your heel. The strength and flexibility of this tendon…

What is achalasia in a child? Achalasia is a rare disease that makes it hard to swallow foods and liquids. In achalasia, there is a problem with the tube that…

What is achalasia? Achalasia is a swallowing disorder that affects the esophagus. The esophagus is a tube that connects the back of your throat to your stomach. Food and liquid…