My friend has woke up for the last 3 nights w/ numb, tingling, pins and needles feeling, on l. Side of body, tight muscles, & puffy feeling in l. Arm?

Positional. Generally this is a sleep positional issue with tightness and muscle spasm around the nerves under the armpit. Can be from neck also. If it goes away quickly then needs to work on some thoracic outlet stretches with a therapist. If persists should get checked out.