Hello,
Since you had a
weight loss surgery, you should take care of your diet. Take nutritious healthy diet. Deficiency of vitamin B6 (veggies, whole grain cereals, poultry, chicken, turkey, brown rice) causes red itchy rash(seborrheic
dermatitis).
Take food rich in vitamin B6 &
folic acid. You can also take supplements. If you are sexually active, get physically examined by a GP.
He may suggest you get STD tests done to rule out shingles, dermatitis,
psoriasis. If the report is positive you may need antibiotics & antivirals.
In the meantime, you can take antifungals, antihistamines for relieving & apply
hydrocortisone cream locally.
After a shower, dry your skin & apply calamine lotion or a medicated moisturizer, do not leave it dry.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Nupur K, General & Family Physician