Having more than one baby is especially exciting—and complicated. Find out what to watch for, including a greater chance of anemia and preterm birth.

Viral hemorrhagic fevers (VHFs) are illnesses caused by several types of viruses. Some of these viruses cause mild illness. Many others lead to life-threatening diseases with no known cures. One of the best known of this group is the Ebola virus.

Detailed information on Merkel cell cancer, including diagnosis and treatment.

Detailed information on skin cancer, including anatomy of the skin, skin cancer facts, skin cancer causes, skin cancer types, cutaneous t-cell lymphoma, actinic keratosis, skin cancer treatment, sun-damaged skin, skin cancer prevention, and sunscreen.

Detailed information on mental health and women, including information on managing stress, depression, and domestic violence

Detailed information on learning to manage your medicine, especially if you are taking several medicines and treating different conditions.

Detailed information on upper respiratory infections, upper respiratory infections symptoms, upper respiratory infections treatment

Detailed information on sleep problems overview

Here's a list of respiratory conditions, as well as information on treatment and prevention.

Primary pulmonary hypertension (PPH) is high blood pressure in the lungs. It's a rare lung disorder in which the blood vessels in the lungs narrow and the pressure in the pulmonary artery rises far above normal levels.