Head pain and tenderness are the most common symptoms of giant cell arteritis, an inflammation of the lining of your arteries.
Disease
Granuloma annulare
Learn about this painless skin condition mainly affecting young adults in which bumps form a ring. The rash can be long lasting or recur after treatment.
Disease
HIV/AIDS
Learn more about this potentially life-threatening infection that spreads through blood, sex and childbirth. Know how to prevent and treat it.
Disease
Heart arrhythmia
Learn about common heart rhythm disorders that can cause your heart to beat too fast, too slow or irregularly.
Disease
Heart attack
A blockage of blood flow to the heart can damage or destroy heart muscle.
Disease
Hives and angioedema
Learn more about these common but short-lived skin conditions, their symptoms, causes and home remedies, and how to prevent them.
Disease
Illness anxiety disorder
Excessive worry that you're seriously ill based on minor symptoms can result in major emotional distress and disrupt your life. Also called hypochondria.
Disease
Iron deficiency anemia
Iron deficiency anemia — Comprehensive overview covers symptoms, causes, treatment of this blood disorder.
Disease
Juvenile idiopathic arthritis
Learn about this type of arthritis that affects children and can cause growth problems, joint damage and eye inflammation.
Disease
Latex allergy
This allergy is a reaction to proteins in natural rubber latex — found in medical gloves, balloons and more. Find out how to avoid many common triggers.
Disease
Lazy eye (amblyopia)
Abnormal visual development early in life can cause reduced vision in one eye, which often wanders inward or outward.
Disease
Median arcuate ligament syndrome (MALS)
Stomach pain after eating isn't always indigestion. It could be MALS, also called celiac artery compression. Know the warning symptoms.