D problem stems from dry skin. Apart from using anti histamines, make sure to use a good moisturiser. Preferably one with glycerin as an ingredient or use non perfumed petroleum jelly or vaseline. Immediately after a bath, rub d cream all over d body with d water. Don't let d water dry as moisturisers only keep in water not provide water. If using a moisturising cream, make sure it also contains petrolatum as it helps moisturise dry skin.
Also drink lots of water, at least 4 litres everyday. Don't drink all d water at once. Drink at intervals.
Within a week, d problem should be solv ed d