Hi. Greetings. This appears to be hand foot and mouth disease based on the symptoms you have described. You must show it to a dermatologist or pediatric dermatologist at earliest and confirm. She'll need oral anti histamine syrup for relief from itching. The condition usually resolves completely within a week. You can apply calamine lotion on the hand and feet lesions. Hope this helps. Let me know if you need any further assistance in this regard.