PAR is an acronym for parabolic aluminized reflector. A PAR lamp, which may utilize either an incandescent filament, a halogen filament tube or a HID arc tube, is a precision pressed-glass reflector lamp. PAR lamps rely on both the internal reflector and prisms in the lens for control of the light beam.
Causes of Red Spots on the Skin. 1  Acne (Pimples) Acne is a localized skin inflammation as a result of overactivity of oil glands at the base of hair follicles. 2  Allergy (Allergies) An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances.
The skin is the main area where leukocytoclastic vasculitis manifests, particularly on the legs, though it can occur in other areas as well. The discolorations it causes are known as purpura. These small spots, caused by bleeding under the skin, can be red or purple in color and are typically raised from the skin.