Severe itching and spreading rash around the vaginal area is usually due to a fungal infection like Tinea Cruris or Vaginal Candidiasis. You can use a plain antifungal cream such as clotrimazole, miconazole, or luliconazole twice daily for at least 2?3 weeks, and keep the area clean, dry, and sweat-free by wearing loose cotton underwear. Avoid using steroid-mixed creams, as they can worsen the infection. If the infection is extensive or not improving, a doctor may prescribe an oral antifungal like Fluconazole, which should be taken only with medical advice. If you cannot visit in person, consider an online consultation to get the correct diagnosis and treatment.