Bullous pemphigoid – NHS

Bullous pemphigoid is a rare skin condition that causes itching, redness and blisters. It may last a few years and sometimes causes serious problems, but treatment can help. Check if you have bullous pemphigoid. Bullous pemphigoid mainly affects people over 60. It usually starts as sore, itchy red patches

https://www.nhs.uk/conditions/bullous-pemphigoid/