Learn about substance use disorder and dependence, including causes, symptoms, diagnosis, and treatment.

Vulvitis is inflammation of the soft folds of skin outside the vagina.

If initial tests and exams strongly suggest that you have ovarian cancer, you'll likely have other tests. These tests help your healthcare providers learn more about your cancer.

Appendicitis is a medical emergency that happens when your appendix becomes sore, swollen, and diseased.

An overview of different eye care providers and what they do, from ophthalmlogists and optometrists to opticians and ocularists.

Detailed information on cosmetic safety for contact lens wearers.

Otolaryngology focuses on medical and surgical treatment for people who have disorders of the ear, nose, throat, and related structures.

The heart is a pump made of muscle tissue. Its pumping action is controlled by electrical impulses.

Cardiac rehabilitation programs can be conducted while a person is a hospital inpatient or on an outpatient basis.

Cardiomyopathy is any disease of the heart muscle in which the heart loses its ability to pump blood effectively.