Severe itching with dark, painful, dry skin around the groin, under the breasts, and near the vagina is commonly caused by fungal infection, friction, sweating, moisture buildup, eczema, or skin irritation from tight clothing. Repeated rubbing while walking or running can damage the skin and lead to small cuts or wounds. The darker colour may develop because of long-term inflammation and scratching. Keeping the area dry and clean is very important. Wear loose cotton clothes, change sweaty clothing quickly, and avoid harsh soaps or scented products because they may worsen irritation. Doctors commonly use antifungal creams, anti-itch medicines, or soothing barrier creams depending on whether the cause is fungal infection, eczema, or friction-related irritation. Applying moisturiser to dry, cracked skin may also help reduce pain and further damage. Avoid scratching because it can increase infection and skin injury. Consult your doctor if there is pus, severe redness, spreading rash, fever, or worsening pain, as proper treatment may be needed.