Deep vein thrombosis (DVT) occurs when a blood clot (thrombus) forms in one or more of the deep veins in the body, usually in the legs....

Nonalcoholic fatty liver disease (NAFLD) is an umbrella term for a range of liver conditions affecting people who drink little to no...

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads,...

Adult attention-deficit/hyperactivity disorder (ADHD) is a mental health disorder that includes a combination of persistent problems,...

Menopause is the time that marks the end of your menstrual cycles. It's diagnosed after you've gone 12 months without a menstrual period....

Clinical research is medical research involving people. There are two types, observational studies and clinical trials. Observational...

Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or...