Hi there, I have understood your concern and I will suggest you the best possible treatment options.
First of all do not panic.
It can be extension of the nearby
fungal infection in the groin area that has affected your external genitalia.
I will suggest you to seek prescription support from your treating Gynecologist.
You might require Antifungal agents like
Fluconazole, 200 mg twice a week for 4 weeks, antihistamines like
Cetrizine 10 mg once a day as needed and for local application ointment containing antibacterial and antifungal and mild steroid agents.
Use of vaginal suppositories containing
Clotrimazole and
Clindamycin for a week will be of help.
Take care of local hygiene.
Keep private parts clean and dry.
If you have tendency of sweating in the groin area use of Candid dusting powder will help to keep the area dry.
Use of Lactic acid containing vaginal wash during bath time is advisable.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar.