Scrotum Skin Rash, Burns Causes.Could This Be An STD Infection Symptoms?

My scrotum skin is extremely itchy red rash and testicles burns a little and my inner anus butt cheeks itching tingle a little but not red. No spots, lesions, or other marks. Could this rash be an STD infection symptom? I have been using Cialis a lot lately and I have in a few hot tubs that maybe the causes.

Zoe answered