my daughter is 17, 5ft4", normal weight (not skinny or fat) and last week she had a localised swelling on the inside of her elbow. about the size of a small orange. The swelling was firm to the touch, hot, red and itchy. She went to the hospital and was prescribed ibuprofen and antihystamines. 2 days later she had the same but also on the outside of the top of her arm. We iced it and it went down. last night it was worse; inside of her knee, sole of her foot, one hand, her top lip and cheek. Again a visit to the hospital and more ibuprofen. She does not have any bites or rashes. Only different lately is she has had a full set of immunizations for Tanzania. Any ideas please ?