Itching and rash in the private area are often due to a fungal infection, sweat, tight clothing, or irritation from soaps or hygiene products. Keep the area clean and dry, wear loose cotton underwear, and avoid using scented or harsh products that can worsen it. Do not scratch, as it can increase irritation and spread the infection. A doctor may recommend appropriate treatment based on the cause, so it is better to have it checked if it does not improve.