To prevent common skin rashes in children, maintain proper hygiene by bathing them regularly with mild soap and warm water. Keep their skin moisturized to avoid dryness and irritation. Dress them in breathable, cotton clothing to reduce sweating and friction. Avoid allergens like harsh detergents and certain foods that may trigger reactions. If a bacterial infection is suspected, consult a doctor for appropriate treatment. In severe cases, a doctor may prescribe Ceftriaxone Injection, an antibiotic used to treat bacterial infections that cause skin rashes. Always follow medical advice and ensure children stay hydrated and maintain a healthy diet for better skin health.