My baby keeps getting such hard blisters on leg and later once it’s cured it leaves a black mark. My baby is 10 months old. Which insect bite is this ?

A. It could be like a water blister but the picture is not very clear for me and if it is repeating then I would suggest you to take an assessment with the doctor could be associated with some kind of an allergy infection she first need to figure out what’s the problem to fix it well