Yes, Cetcip 10 mg Tablet may help reduce itching caused by allergies, sweat rash, or skin irritation in the inner thigh and underwear areas. It contains Cetirizine, an antihistamine that can provide temporary relief from itching and discomfort. However, it may not treat the actual cause of the rash. Rashes in this area are commonly caused by fungal infection, sweating, friction from tight clothing, poor hygiene, or an allergy to fabric or soap. If the rash is red, spreading, scaly, burning, or foul-smelling, a fungal infection may be the cause, and you may need an antifungal cream instead. Keep the area clean and dry, wear loose cotton underwear, avoid scratching, and change sweaty clothes promptly. Avoid using harsh soaps or powders on the affected skin. If the rash lasts more than 1 to 2 weeks, becomes painful, or spreads further, please consult a doctor or dermatologist for proper examination and treatment.