I Am Having Itching Thro' Out My Body For The

I am having itching thro' out my body for the past 1 Year. Dermatologist said it is due dryskin and asked me to take Zevit capsule in the afternoon and xevor pill at bedtime for ten days. He also asked to use Moiz soap far bath. The itching is still persisting and it becomes severe in night and disturbs my sleep, Shall I continue the medication for some more time.