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.
1. Hot Spots. As I understand it, hot spots are caused by bacterial infection on the dogâs skin. It usually starts when a scratch or opening on the skin is exposed to moisture, for a prolonged period of time. My Husky developed a hot spot last winter, on the lower-inner part, of her back leg.