I have what appears to be a blocked hair follical or ingrone hair on the shaft of my penis. how do i treat it

See a dr: Other than warm soaks i'd see a doctor to make certain it is not a sexually transmitted disease.

Ingrown hair penis: First of all, don't try to shave it off. I know that sounds dumb, but I have heard some real strange things in my 30 years as a psychiatrist. I would recommend that you see a dermatologist. S/he should be able to solve your problem forthwith.