In young birds the gape is very soft and noticeable but in a fledgling it begins to harden somewhat, become less prominent, and--like the bill itself--darken with age. (In some bird species--Purple Finches, for example--the adult retains a yellow gape, albeit smaller and less obvious.)
Psoriatic Arthritis. Psoriasis is a skin disease in which patients have dry, red and scaly skin rashes that can occur on any part of the body. Between 5-20% of patients with psoriasis may develop an associated arthritis. Arthritis means inflamed joint.
Full Answer. 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.