This can lead to shortness of breath, as well as possible chest pain, depending on the cause of the effusion. Fever is another possible finding, but is also related to the cause of the effusion. ... Read more
Re: can benzoyl perioxide permanently damage skin??? Yes, BP can cause a dermatitis (permanent skin damage). I had problems with BP, I used it for the spots, but when I applied it my skin went red (it like burned...)on the spots I had applied the BP. I personally don't like BP at all.
It's unusual for a 2nd degree burn to scar permanently because the damage isn't as deep or as serious as a 3rd degree burn, but it's not unheard of. 2nd degree burn, while painful, injures the top layer of skin and extends down into the dermis (the deeper layer of tissue). As for scarring, generally not with a 2nd degree burn.