For depression, St. John's wort is a common herbal supplement that is used. St. John's wort has been used for medical purposes in other parts of the world for thousands of years.
A variety of other causes, conditions, and diseases can also cause vaginal burning or burning sensation in vaginal area. Sexual transmitted disease (STDs) â Many STDs, including chlamydia, gonorrhea, genital warts, and genital herpes, can cause a burning sensation in the vaginal area.
The more common causes of pain that tends to worsen or start at night includes 1  : Gastritis. Inflammation of the stomach wall that is more commonly caused by H.pylori infection or NSAIDs. 2  Peptic ulcers. Open sores in the stomach and/or duodenum (first part of the small intestine). 3  Acid reflux.