The PAR can is the lamp housing that safely holds the lamp and any color media (gel) in place. The can also has a mounting bracket that allows it to be bolted to a light bar or truss or by use of a pipe clamp...well, clamped to a pipe.
Raynaud's Disease, Numb, Cold Fingers or Toes, Symptoms and Treatment. Definition. Episodic vasospasm (constriction of small arteries) of the fingers or toes. It is characterized by digital (fingers or toes) blanching or white color, cyanosis (blue), a feeling of numbness or dulled sensory response and rubor (red) after cold exposure and rewarming. It can also be induced by anxiety or stress.
A simple blood test can detect either, and both are treatable. But, if frostiness is paired with pain, burning, or drastic whitening of fingers or toes, it could be an indication of peripheral vascular disease (spasm of the arteries), which is more serious; you should see your doctor ASAP.