Hey, would like to ask u to look for the possible allergic agent which you might be in contact of.
Next Steps
Wud like to ask if u had asthma in your childhood? R these blisters also itching too?
You can use lactocalamine lotion for the time being.
If still no relief dis definitely requires a dermat consult.
Health Tips
Simply stay away from any allergic substance causing it like any powder, detergent or sanitizer.