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Disease

C. difficile infection

Learn more about this diarrhea-causing infection that often occurs after antibiotic use. Many, but not all, people who get it are in health care facilities.
Disease

Geographic tongue

Geographic tongue may look alarming, but it does not cause health issues. Sometimes it can cause tongue pain and make you more sensitive to certain foods.
Disease

Pediatric brain tumors

Pediatric brain tumors include medulloblastoma, glioma, embryonal tumor, germ cell brain tumor, spinal cord tumor, craniopharyngioma and pineoblastoma.
Disease

Radiation sickness

Read about what happens when someone is exposed to high doses of radiation, and what you can do to prevent such exposure in an emergency.
Disease

Cluster headache

These painful headaches cause severe pain on one side of the head and tend to occur in bouts called cluster periods.
Disease

Immune thrombocytopenia (ITP)

Caused by low levels of platelets, symptoms may include purple bruises called purpura, as well as tiny reddish-purple dots that look like a rash.
Disease

Patellofemoral pain syndrome

This pain near the front of the knee is more common in people who run and who play sports that involve running and jumping.
Disease

Pericarditis

Inflammation of the tissue surrounding the heart can cause sharp chest pain and other symptoms. Know how pericarditis is diagnosed and treated.
Disease

Multiple endocrine neoplasia, type 2 (MEN 2)

Learn about this rare condition that causes tumors and overproduction of hormones.
Disease

Amyotrophic lateral sclerosis (ALS)

This nervous system disease, also known as Lou Gehrig's disease, destroys nerve cells and gets worse over time.
Disease

Ulcerative colitis

This type of inflammatory bowel disease causes swelling and sores in the digestive tract. Learn more about symptoms, treatment and managing flares.
Disease

Iron deficiency anemia

Not getting enough iron can lead to this condition, which can cause tiredness and shortness of breath.

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