<unk> , also juvenile<unk> , is<unk>  in a child.<unk>  may be:
Transient & self-limited
Chronic
Chronic forms of<unk>  seen in<unk>  are:
Ankylosing spondylitis
Psoriatic<unk> 
Juvenile idiopathic<unk>
Childhood arthritis
Arthritis-dermatitis syndrome
Juvenile idiopathic arthritis
Juvenile dermatomyositis
Polychondritis
Scleroderma
Familial mediterranean fever
Kawasaki disease