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Skin cancer is a disease in which malignant (cancer) cells form in the tissues of the skin. The skin is the body's largest organ. It protects against heat, sunlight, injury, and infection. Skin also helps control body temperature and stores water, fat, and vitamin D. The skin has several layers,...
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Intraocular melanoma is a disease in which malignant (cancer) cells form in the tissues of the eye. Intraocular melanoma begins in the middle of three layers of the wall of the eye. The outer layer includes the white sclera (the "white of the eye") and the clear cornea at the...
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Childhood chordoma is a disease in which malignant (cancer) cells form in the tissue found inside the spine. Chordoma is a type of slow-growing tumor that forms anywhere along the spine, from the base of the skull (a bone called the clivus) to the tailbone. In children and adolescents, chordomas...
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Carcinoma of unknown primary is a disease in which malignant (cancer) cells are found in the body but the place the cancer began is not known. Cancer can form in any tissue in the body. The first cancer to form is called the primary cancer. The process of cancer cells...
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Briefly discusses causes of neck problems or injuries, including common activities, sudden injuries, overuse, and health conditions that may cause problems. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.
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Briefly discusses what happens when diseases or injuries affect the nervous system. Covers emergency symptoms like loss of consciousness, seizures, and confusion or behavior changes. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.
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Briefly discusses causes of nosebleeds, including injuries, health conditions, medicines, and changes in the environment, such as smoke. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.
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Briefly discusses causes of nose injuries from sports, hobbies, and work-related activities. Covers seriousness of a broken nose and possible complications. Offers interactive tool to help decide when to seek care. Also offers home treatment tips.
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Learn how to use good posture to protect your back while sitting, standing, and walking. And learn about comfortable sleep positions for your back.
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Taking medicine as your doctor prescribes may improve your health and may prevent future problems. Not taking medicines properly could put your health or your life at risk. Taking your medicines safely is especially important for those who take a lot of medicines. Taking a lot of pills increases your...