Stinging pain in testicle skin surface

Patient: Hi, i’ve been having some itching on my scrotum the last four days. Since it is irresistible, i scratched them sometimes. The location precisely is on my right testicle. If i do scratch it though, i make sure my hands are clean. However, yesterday I found out there is some stinging pain on my right testicle. Felt like a scraped skin, but it is quite hard to see any redness to it, although i managed to find a small white spot (looks a bit like a pimple) on the are of the pain. It hurts a bit when it is in contact with water and when i touch it. Any comment on this? and on the procedures i should take? Thank you.

Symptoms: 1. Itchiness on right testicle
2. Stinging pain on right testicle after scratching

Doctor: