why does your skin bubble when it gets severely burnt? And what’s the fluid?

Question

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In: Biology

Answer 1

A bad sunburn or other burn can cause some damage to the dermis, the living layer of cells below the epidermis. When this happen, the blood vessels will start to get leaky there to fill it up with plasma, which cushions and protects the epidermis as it heals. The plasma in it is basically just blood without the big components like cells (except for white blood cells that’ll crawl out on their own).

If it gets infected, foreign cells can reproduce in abundance, causing white blood cells to also go there in abundance, at which point the fluid is called puss.