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Discusses tonsillitis. Covers symptoms like sore throat and swollen lymph nodes. Includes causes like the bacteria that cause

Lice are tiny insects that live or feed on the human body. They can't jump or fly, but they can spread easily from one person to

A free radical is an atom or molecule with at least one unpaired electron, making it especially reactive to other atoms or groups

Complementary medicine is a nonstandard therapy that some people use in addition to their doctor's standard care. (The word

Accommodation is the ability of the lens of the eye to change shape, allowing for a change in focus from far to near. The lens

Photorefractive keratectomy (PRK) and laser epithelial keratomileusis (LASEK) for farsightedness use a laser to reshape the cornea

There are two different types of peptic ulcers. They are: Gastric ulcers, which form in the lining of the stomach. Duodenal ulcers

A chalazion (plural: chalazia) is an inflammation of the deep oil glands inside the eyelid. It develops over 2 to 3 weeks, forming

Symptoms of GERD can be painful and, if allowed to continue, can lead to complications including esophagitis. Esophagitis is

Diverticulitis is a condition that happens when pouches that form in the wall of your large intestine get inflamed or infected