|While treating a poison ivy rash can normally be handled without the help of a doctor, something like this is serious enough to see your doctor. Rashes on sensitive areas like the genitals and face should be looked at and treated by a professional.
You might try soaking in a soothing bath in the meantime to help reduce redness and itching. Many recommend oatmeal baths or you could try a baking soda bath. Good luck!