Strange that i feel like bugs are landing on me, but i can't see the bugs, and i have no visible bites?

Formication: Is the term for this parathesia which may b caused by stimulants (ritalin, amphetamines, cocaine, etc) or skin cancer, lyme disease etc-- probably a dermatologist cld make diagnosis.

Somatic delusions: Bugs crawling is sensation common with illicit substances such as pcp, crack, stimulants, or neurotoxicity from prescribed medications that affect nervous system at high doses.