Symptoms and Causes

Overview Hyperhidrosis is a condition characterized by excessive sweating that occurs even without heat or physical activity. This excessive sweating can be severe enough to soak…

Overview Peyronie disease affects the penis. It involves the growth of fibrous scar tissue in the deeper layers beneath the skin. This scarring leads to curved,…

Overview Hamstring injuries happen when someone strains or pulls one of the three muscles that run along the back of the thigh. These injuries commonly affect…

What Are Bone Spurs? Bone spurs, or osteophytes, are extra bone growths that develop along the edges of bones. They typically form in joints where bones…

What Is Tendinitis? Tendinitis happens when the tough, rope-like tissues connecting muscles to bones become inflamed. These tissues are called tendons. When you have tendinitis, you’ll…

Understanding Oppositional Defiant Disorder Oppositional Defiant Disorder (ODD) is characterized by a consistent pattern of angry, irritable behavior, and defiance toward authority figures. All children occasionally…

Overview Allergies occur when the immune system responds to substances that enter the body. These substances, called allergens, include things like pollen, bee venom, pet dander,…

What Is Toxoplasmosis? Toxoplasmosis is an infection caused by the parasite Toxoplasma gondii. People typically get infected by eating meat that isn’t fully cooked or through…

Overview Intrahepatic cholestasis of pregnancy affects the liver during the later stages of pregnancy. This condition causes severe itching without any visible rash. Most women experience…

Primary Hyperparathyroidism Primary hyperparathyroidism happens when there’s a problem with one or more of the four parathyroid glands themselves. These small glands are located in the…