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.
What Causes Hot Spots on Dogs. Common causes of hot spots can be just about anything that causes any irritation to the skin and fur, such as insect bites, allergies, anal gland problems, and matted fur.Some dogs even cause their own hot spots from psychological problems, such as boredom or stress.ommon causes of hot spots can be just about anything that causes any irritation to the skin and fur, such as insect bites, allergies, anal gland problems, and matted fur.