Causes of itchy palms and soles include psoriasis, eczema and scabies, according to WebMD. Diabetes and allergies can also cause the hands and feet to itch.
Itchy palms and soles are common symptoms of psoriasis. Other symptoms include red skin, soreness and swelling, states WebMD. One type of eczema known as dyshidrotic dermatitis only affects the hands and feet and can be the cause of itchiness. An early sign of diabetes is a skin condition that makes the hands and feet itch. It goes away if the diabetes is managed correctly. Treatment depends on what the cause of the itchiness is.