Health A-Z


Clinical Definition Lice are blood-sucking parasites, known as Pediculus humanus capitis if on the head; Pthirus pubic if in the pubic area; andPediculus humanus corporis if elsewhere on the body. Infestations are typically the result of close person-to-person contact. Incapable of flying or hopping, the parasitic insects must crawl instead. Treatments with prescription or over-the-counter remedies can quell infestations. In


Clinical Definition A lipoma is a benign encapsulated neoplasm, which usually has a soft, rubbery consistency. It is composed of mature adipocytes. Lipomas are usually located in the subcutaneous layer of the skin. They are usually painless and most often do not require treatment. In Our Own Words A lipoma is a non-cancerous, abnormal mass


Clinical Definition A lipoprotein is a particle composed of lipid and protein molecules, bound together, that transports cholesterol in the blood. Low-density lipoproteins (LDL) make up the majority of the cholesterol in the body; high levels increase the risk of coronary artery disease and stroke. High-density lipoproteins (HDL) absorb cholesterol and transport it to the

Liver spots

Clinical Definition Liver spots, or solar lentigines, are often called age spots. These flat, pigmented spots are prevalent on the face, hands, arms, back and feet of fair-skinned people. The etiology is years of sun exposure. Treatments include cryotherapy, laser therapy, chemical peels, and retinoids. In Our Own Words Liver spots, also called age spots, are

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