This common sexually transmitted infection is caused by a parasite. Lower your risk by using condoms when you have sex.
Disease
Persistent depressive disorder
This type of depression may cause you to feel sad and empty and to lose interest in life. You may feel like a failure. These feelings may last years.
Disease
Obstructive sleep apnea
Learn the signs that point to this common and potentially serious sleep disorder. And find out the treatments that can help you sleep better.
Disease
Autism spectrum disorder
This condition related to brain development causes problems in getting along with others socially and communicating. Symptoms and severity can vary widely.
Disease
Panic attacks and panic disorder
Learn about effective treatment for sudden episodes of intense fear that trigger severe physical reactions when there is no real danger or apparent cause.
Disease
Postpartum depression
Learn the risk factors and symptoms of depression in new mothers, as well as effective treatment that can help you manage symptoms and bond with your baby.
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
Epilepsy
Learn about this condition that causes seizures. Find out which symptoms are associated with different types of seizures and how they're treated.
Disease
Optic neuritis
Learn about this painful eye disorder that affects your optic nerve and what your doctor may recommend for treatment.
Disease
Deep vein thrombosis (DVT)
This potentially serious condition can occur with few or no symptoms. Know the risk factors.
Disease
Acute flaccid myelitis (AFM)
Know the possible symptoms of acute flaccid myelitis (AFM), a rare but serious condition that affects young children.
Disease
Claudication
Too little blood flow to the legs and arms can cause pain, especially during exercise. Learn more about diagnosing and treating intermittent claudication.