My 2 year old has got blister like things on her legs.. no where else on her body. they look like mosquito bites but not completely?

Insect bites: If she is otherwise well and without other symptoms, she most likely has insect bites. Apply a thin layer of Caladryl lotion three times daily. Watch for increased swelling, pus and fever. If she has signs of infection, please see your physician.

Contact rash: These could be insect bites, but also could be a reaction to something she came in contact with, such as a plant or other substance, especially if more of them are erupting and they are in a line or group. A bacterial infection of the skin is also possible. If there are more of them coming out and topical treatment is not helping, please have her examined.