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.
A laser often will ablate or destroy the top layers of your skin. New growing skin can be photo-sensitive. This means it can easily be damaged by sun exposure. The most common response to this exposure is for your skin to darken, freckle or become what we call photo-damaged. Severely photo-damaged skin can have a higher incidences of actinic keratosis and skin cancers.