i was sitting outside talking to a friend and within 5 minutes little red bumps appeared all over my legs and on the insides of my arms as well. i was not wearing my usual lotion with spf but normally this never happens. it looks like a razor burn but all over my legs. after going inside the bumps have minimized but some are still there.
HiT hank you for writing to Chat Doctor The sudden appearance of red bumps on the legs and the arms indicate an allergic reaction. This requires treatment by the use of anti-allergic Chat Doctor.  You need to identify the allergen and to avoid exposure to this. Hope this is helpful to you. Do write to me for further questions and I will be happy to help. Thank you