Conditions
Humerus Fracture
A humerus fracture is a break in your upper arm bone (humerus), the long bone that runs from your shoulder to your elbow. These…
Holoprosencephaly
Holoprosencephaly is a rare brain condition that happens when a baby's brain does not properly divide into two halves (hemispheres) during early pregnancy. This…
Aplastic Anemia
Aplastic anemia is a rare and serious condition where your bone marrow stops making enough new blood cells. This includes red blood cells, white…
Aortic Stenosis
Aortic stenosis is a heart condition where the aortic valve, one of the heart's four valves, narrows and stiffens. This narrowing restricts blood flow…
Anisometropia
Anisometropia is an eye condition where your two eyes have significantly different refractive errors, meaning one eye is much more nearsighted, farsighted, or has…
Anisocytosis
Anisocytosis is a medical term used when your red blood cells are not all the same size. It is not a disease itself but…
Angiomyolipoma of the Kidney
An angiomyolipoma (an-jee-oh-my-oh-lih-POH-muh) of the kidney is a noncancerous (benign) tumor made of fat, smooth muscle, and blood vessels. These growths are often found…
Anaplastic Large Cell Lymphoma
Anaplastic Large Cell Lymphoma (ALCL) is a rare type of cancer that affects white blood cells called lymphocytes, specifically T-cells or natural killer (NK)…
Anal Stenosis
Anal stenosis is a condition where the anal canal (the opening at the end of your digestive tract) becomes abnormally narrow. This narrowing can…
Amaxophobia
Amaxophobia is an intense, irrational fear of driving a car or being a passenger in a vehicle. It is a type of specific phobia…
Alcohol-Induced Hepatitis
Alcohol-induced hepatitis is a serious type of liver inflammation caused by heavy alcohol consumption. It can range from mild to severe, sometimes leading to…
Adult-Onset Still’s Disease
Adult-Onset Still's Disease (AOSD) is a rare inflammatory condition that affects the entire body. It is a type of arthritis that causes symptoms like…
Adrenarche
Adrenarche is a normal part of childhood development, usually starting between ages 6 and 8, where the adrenal glands begin to produce certain hormones.…
Adrenal Cancer
Adrenal cancer is a rare type of cancer that begins in one or both of your adrenal glands, which are small glands located on…
Adenoid Cystic Carcinoma
Adenoid cystic carcinoma (ACC) is a rare type of cancer that can develop in many parts of the body, most often in the salivary…
Acute Tubular Necrosis
Acute tubular necrosis (ATN) is a kidney condition where the tiny filtering tubes inside your kidneys get damaged. This damage often leads to a…
Acute Promyelocytic Leukemia
Acute promyelocytic leukemia (APL) is a fast-growing cancer of the blood and bone marrow, which is the soft, spongy tissue inside your bones. It…
Acute Lymphoblastic Leukemia
Acute lymphoblastic leukemia (ALL) is a fast-growing cancer of the blood and bone marrow. It starts when the body makes too many immature white…
Acute Heart Failure
Acute heart failure (AHF) is a sudden and severe worsening of heart failure symptoms, often requiring emergency medical care. It happens when your heart…
Acute Cystitis
Acute cystitis is a sudden inflammation of the bladder, most often caused by a bacterial infection. It is a common type of urinary tract…
Acoustic Neuroma
An acoustic neuroma, also known as a vestibular schwannoma, is a rare, noncancerous (benign) tumor that grows slowly on the main nerve leading from…
Abdominal Migraine
Abdominal migraine is a type of migraine that causes moderate to severe belly pain, usually around the belly button, instead of a headache. It…
Achalasia
Achalasia is a rare disorder that affects your esophagus, the muscular tube that carries food from your mouth to your stomach. It makes it…
Abdominal Migraine
Abdominal migraine is a type of migraine that causes episodes of moderate to severe stomach pain, rather than a headache. It is most common…