This may be a case of hyperkeratosis or thickening of the skin. The cause of this condition may be due to several factors such as in your case ,seborrheic dermatitis. Seborrheic dermatitis may present with scaling on the body and the head
Apply moisturizers over the palm and soles. Vitamin E cream at least three times a day may be able to help here. This will help smoothen and soften the thickened areas of skin. If the symptoms persist then have this further assessed by your doctor.