Burning in the genital area, swelling around the perineum/vestibule and intermittent pain after sexual intercourse can arise from several causes. Common possibilities include infections (for example vaginitis such as fungal infection/candidiasis, or genital herpes), skin irritation or allergic contact dermatitis (for example related to condoms, lubricants or soaps), mechanical trauma or friction, and urinary tract–related discomfort. To help determine the cause, a clinician will ask about timing, whether the symptoms began immediately after sex, any vaginal or urethral discharge or visible redness, recent condom or lubricant use, partner changes and partner symptoms. Physical examination of the external genitalia and, if indicated, speculum exam and laboratory tests (vaginal/cervical/urethral swabs, cultures or urine tests) are often used to clarify the diagnosis. Seek urgent care if you have high fever, severe or uncontrolled bleeding, severe pain, fainting or lightheadedness, difficulty urinating, or rapidly spreading genital redness or swelling. Gentle cleansing with plain water, staying well hydrated, rest and temporarily avoiding sexual activity can be reasonable supportive measures while you seek assessment, but they do not replace medical evaluation. Initial assessment is commonly done by Obstetrics and Gynaecology or Family Medicine; Dermatology and Venereal Diseases, Infectious Diseases and Urology may be involved if needed.