Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Disease
Ganglion cyst
These fluid-filled, noncancerous lumps most often appear on wrists, hands or feet.
Disease
Bunions
This bony bump forms on the joint at the base of the big toe. Learn more about the causes and treatments of this condition, which sometimes can be painful.
Disease
Patellar tendinitis
This common knee injury affects the tendon that stretches from the kneecap to the shinbone.
Disease
Sprains
A sprain is a stretching or tearing of ligaments — the tough bands of tissue that connect two bones together in your joints. Ice and elevation can help.
Disease
Prescription drug abuse
Using a prescription medicine in a way not intended by the prescriber can lead to drug abuse. Learn about risk factors and treatment for drug misuse.
Disease
Blastocystis hominis
This microscopic organism is a parasite that can live in your digestive system. Whether it causes digestive problems isn't clear.
Disease
Lichen sclerosus
Learn more about the causes, symptoms, complications, treatment and self-care tips for this blotchy skin condition that affects the genital and anal areas.
Disease
Neurodermatitis
Learn about this itchy skin condition that can disrupt your sleep and daily activities. Treatment focuses on controlling itching and preventing scratching.
Disease
Pinworm infection
Learn more about the symptoms, treatment and prevention of this common intestinal worm infection.
Disease
Keloid scar
Learn about how to prevent, remove or flatten these problematic raised scars that form over scars from acne, tattoos, piercing and other injuries.
Disease
Infertility
Find out about the challenges of not being able to get pregnant. Learn the causes, risk factors, and treatments including insemination and in vitro fertilization.