Do yourself a favor and plase show this to a doctor. It could be folliculitis, but it also could be herpes or bacterial impetigo. If it's bacterial, antibiotics may be needed. If it's herpes, your doctor will be able to tell now, when the lesions are still visible, instead of just guessing after they've gone. This will save you a lot of anxiety.
As for the burning urination, that's an equally important reason to see a doctor now. Your skin changes wouldn't explain burning urination--you may have an infection in the urine.
Or you may not. But unless you get checked, you won't know.
Best.
Dr. Rockoff