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MedlinePlus presents high-quality, easy to understand, relevant health and wellness information that is trusted.
What are drugs? Drugs are chemical substances that can change how your body and mind work. They include prescription medicines, over-the-counter medicines, ...
What is drug use? Drug use, or misuse, includes: Using illegal substances, such as
Anabolic steroids Club drugs Cocaine Heroin Inhalants Marijuana Methamphetamines
...
What is saliva? Saliva, or spit, is made by your salivary glands. It helps keep you and your mouth healthy. For example: It moistens and breaks down the ...
What is dual diagnosis? If you have a dual diagnosis, that means that you have both a mental disorder and a substance use disorder (SUD), either with alcohol ...
What are eating disorders? Eating disorders are serious mental health disorders. They involve severe problems with your thoughts about food and your eating ...
What is Ebola? Ebola, also known as Ebola virus disease (EVD), is a type of hemorrhagic fever. It is a rare and often deadly disease. It can be caused ...
What is an ectopic pregnancy? The uterus, or womb, is the place where a fetus grows during pregnancy. In an ectopic pregnancy, the fertilized egg grows ...
What is emphysema? Emphysema is a type of COPD (chronic obstructive pulmonary disease). COPD is a group of lung diseases that make it hard to breathe and ...
What is encephalitis? Encephalitis is inflammation (swelling) of the brain. It can happen when an infection or medical condition that affects the brain ...
What is endocarditis? Endocarditis is sometimes called infective endocarditis. It's a rare but life-threatening inflammation of the lining inside your ...
What is endometriosis? The uterus, or womb, is the place where a fetus grows during pregnancy. The uterus is lined with tissue (endometrium). Endometriosis ...
What is the prostate? The prostate is a gland in the male reproductive system. It lies just below the bladder. It makes fluid that is part of semen.What ...
What is eosinophilic esophagitis (EoE)? Eosinophilic esophagitis (EoE) is a chronic disease of the esophagus. Your esophagus is the muscular tube that carries ...
Erectile dysfunction (ED) is a common type of male sexual dysfunction. It is when a man has trouble getting or keeping an erection. ED becomes more common as you ...
Why do I need to evaluate health information? Health information is easy to find. But finding reliable health information takes a little effort. Some ...
What are the basics of exercise and physical fitness? Exercise is anything that gets your body moving. Regular exercise is one of the best things you ...
Why does eye care matter? Eye care is about keeping your eyes healthy through good daily habits, regular checkups, and treatment when needed. Your eyes ...
What diseases can affect the eye? Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. ...
What are eyelid disorders? Eyelid disorders include a variety of conditions that affect your eyelids. Your eyelids protect your eyes and help keep them ...
What is fatigue? Fatigue is a feeling of weariness, tiredness, or lack of energy. It can interfere with your usual daily activities. Fatigue can be a ...
