Thanks for posting your query to HCM.
It seems from your problem that you are having mild "folliculitis" of the affected area.
The points in favor of your problem are - presence of problem on one side with tingling
and itching sensation. This folliculitis is a common problem which arises due to blockage of pores of oil glands which are attached to the hair shaft. Due this blockage we feel the sensation of mild itching or tingling which may get converted into pain sensation. As your problem is present on one side only so you should not get confused for it as a sexually transmitted disease
or related thing.
For the betterment you should maintain good hygiene, wear cotton clothes and cotton undergarments. Can do warm water compresses over the affected area.
If the things are increasing then can meet a dermatologist
for the best of diagnosis and treatment.
In between kindly do not pinch, pop or squeeze the area as can aggravate the situation.
Hope these informations are helpful.
"Wish you good health"
Dr Sanjay Kumar Kanodia
MD (Dermatology & STDs)