The views expressed by me are for educational purposes only and do not establish a doctor patient relationship.
Thanks for your question.
This is likely due to the hair follicle inflammation.
Bacterial infection is the common cause.
Allergic reaction to the personal hygiene products also can cause this.
You can wash the area with chlorhexidine bodyash daily which should help.
Topical hydrocortisone ointment daily also can be applied to avoid the itching.
yes they are over the counter.
Also avoid any dry skin.
Moisturizer like aloe will be good.
Dry skin increases the risk of infection.