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Hi there. If you have not had sexual contact with anyone you do not need to worry about genital herpes. It is very common after shaving the groin to develop a contact dermatitis often with red lesions and/or blisters. The razor can cause loss of the top layers of skin causing inflammation and plugging of the oil producing glands adjacent to the hair follicles under the skin. In some cases fluid is released causing blisters. Occasionally they become infected and require antibiotics. In the meantime, using warm compresses and anti-inflammatories can help with the inflammation and irritation.