lotion

lotion /lo·tion/ (lo´shun) a liquid suspension, solution, or emulsion for external application to the body.

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lo·tion (lshn)

n.

1. A medicated preparation consisting of a liquid suspension or dispersion intended for external application.

2. Any of various externally applied cosmetic liquids.

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lotion

Etymology: L, lotio, a washing

a liquid preparation applied externally to protect the skin or to treat a dermatologic disorder.

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lotion

a liquid suspension or dispersion for external application to the body.

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calamine lotion

a mixture of calamine, zinc oxide, glycerin, bentonite magma and calcium hydroxide solution; used as a protectant.

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Patient discussion about lotion.

Q. What are some good non-prescription lotions for psoriasis

A. Topical (skin applied) medications include topical corticosteroids, vitamin D analogue creams (Dovonex), topical retinoids (Tazorac), moisturizers, topical immunomodulators (tacrolimus and pimecrolimus), coal tar, anthralin, and others. Topical corticosteroids (steroids, such as hydrocortisone) are very useful and often the first-line treatment for limited or small areas of psoriasis. These come in many preparations, including sprays, liquid, creams, gels, ointments, and mousses. Steroids come in many different strengths, including stronger ones are used for elbows, knees, and tougher skin areas and milder ones for areas like the face, underarms, and groin. These are usually applied once or twice a day to affected skin areas. For the complete list:http://www.medicinenet.com/psoriasis/page5.htm
These might useful also:
http://www.skincarephysicians.com/psoriasisnet/treatment.html
http://www.mayoclinic.com/health/psoriasis/DS00193/DSECTION=treatments-and-drugs
Hope this helps.