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A papule is a solid, elevated, palpable lesion smaller than 0.5cm.
Parabens are chemicals used to preserve personal care products, cosmetics, skin care in addition to food. Its other names include but are not limited to butylparaben, methylparaben, ethylparaben and propylparaben.
Paraphenylenediamine or PPD is a chemical used in rubber manufacturing, gasoline, oils, greases and commonly found in hair dye.
Paronychia refers to a condition where the nail folds are red, inflamed and/ or swollen. It can be an acute episode or chronic.
Patch testing refers to a tool used by doctors, usually dermatologists to screen patients for sensitivity to specific allergens. Allergens are placed on chambers, and adhered to patient's skin for usually 48 hours. Depending on the doctor's protocol, patients can return 48 hours or 72 hours for a first evaluation. Patients are taught to avoid any positive allergens.
Pediculosis or lice is an infestation caused by the body or crab louse. The louse is visible to the naked eye and can attach itself to scalp hair or pubic hair where it lays it eggs. Symptoms of lice include complaints of itching usually worst at night.
Propolis is a resin- like substance from the buds of poplars and cone bearing trees. Propolis is found in bee products so those allergic to bees and bee products should avoid propolis and products containing it. Propolis is an ingredient found in cosmetics and many skin care products.
Propylene glycol is a colorless, virtually odorless alcohol used as a solvent, softening agent and preservative in cosmetic and personal care products as well as food. It can also be used industrially for dyes, inks, anti freeze, paints and coolants.
Psoriasis is a skin condition where the cells of the the epidermis are abnormally grown and shed prematurely.