Sores on your back can be caused by bacteria or disease. Impetigo can cause these, as can a problem with acne that has spread to the back.

No, its from allergies

Find out the cause of the sores. There are many different reasons sores could be there. Fix the reason. Go to a gynecologist. If the sores can be healed they will tell you how. If the sores are herpes, there is no cure but you can get medicine to help the sores heal faster.

they are little sores in your mouth

Sores inside the mouth are called canker sores.