What is a Bulla?

[Tenshi]

i have an assigment where i need to find out what a bulla is, how i'd recognise 1 and it's treamtnet aswell as a photo.

i have the basics of what a bulla is but that's where it seems to end..i can't seem to find anything on the web. can anyone help?:lol:

 

[ValencianNails]

bulla - Definition from the Merriam-Webster Online Dictionary

Bullous pemphigoid, close-up of tense blisters Image on Healthline

Found those from Google

hth's