What causes bumps on calves and arm?
Patient: My 6 yr old has small bumps on her calves that are itchy. They are not in any particular shape,however almost on same portion of calf and inner calf, on both legs. They are raised,hard and swollen. A few,on her thigh  are red w swollen rings around them. A few more are now on upper arms;much more tinier, Doctor: Hi,It may be lichen urticatus. Consult the dermatologist for the perfect diagnosis and proper treatment. I would recommend to apply calamine lotion and to give antihistaminics like Hydroxyzine HCL syrup to reduce itching. Protect him from insects.Hope this helps.Dr. Ilyas Patel,Dermatologist