acne
"I took doxycycline for about eight months. It was working great and significantly cleared up my face (though not completely). My doctor took me off it because you can develop a resistance to it over time and it also makes your skin more sensitive to sunlight (although I felt at that that point it was still working fine). Now about two months after being off it my acne has come back with a vengeance, it's almost as bad as it was before I took it. It is soul crushing to look into the mirror and see your skin become worse again. Before you take it it is important to realize it is only a temporary fix and to be prepared for it to come back after you stop taking it. O acne thou hell o' a' diseases"