Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.
Disease
Atypical teratoid rhabdoid tumor (ATRT)
Atypical teratoid rhabdoid tumor (ATRT) is a rare, fast-growing brain or spinal tumor in children. Learn about its symptoms and treatment.
Disease
Auditory processing disorder (APD)
This condition affects how the brain processes sound. Learn about ways to cope with this condition.
Disease
Autism spectrum disorder
This condition related to brain development causes problems in getting along with others socially and communicating. Symptoms and severity can vary widely.
Disease
Autoimmune encephalitis
Learn how the immune system mistakenly attacks brain cells to cause swelling in the brain related to this group of conditions.
Disease
Autoimmune epilepsy
Learn when epilepsy is an autoimmune disease and why early diagnosis and the right treatment are important.
Disease
Autoimmune hepatitis
This type of hepatitis happens when the immune system attacks the liver with destructive antibodies. Immune-suppressing medicine is the main treatment.
Disease
Autoimmune pancreatitis
Autoimmune pancreatitis is a relatively uncommon disease of the pancreas that may be mistaken for pancreatic cancer.
Disease
Autonomic neuropathy
Damage to the nerves that control involuntary body functions, such as blood pressure and digestion, results in autonomic neuropathy.
Disease
Avascular necrosis (osteonecrosis)
A broken bone or dislocated joint can block blood flow to the bone, causing bone tissue to die.
Disease
Baby acne
Baby acne — Comprehensive overview covers causes, symptoms, treatment of this newborn complexion problem.
Disease
Benign adrenal tumors
Most of these tumors need no treatment, but some do. Learn about diagnosis and treatment options.