Hello, I have gone through the query and understood your concern. In the current scenario, the possible causes are- infection in the vagina, cervix which can be detected with a swab test, infection over the mind, dryness of the skin leading to irritation, considering your age, irritation due to the hemorrhoids etc. Generalized infections rarely cause genital irritation except fungal, eczema etc. Test for blood sugar and routine blood counts help. Urinalysis should be done to see if you have any infection. Try using olive oil to smoothen the skin, use loose-fitting cotton garments and avoid tampons. Please get your partner also checked. Hope this helps.