I was on sun a lot last saturday. After 2 days my head was read. After that day i noticed that my head got swollen (but not very much), and i wonder, is this normal? I do not feel that much pain (only on touch), but some parts that does not hurt (even on touch) are swollen also. How long does it take to heal swollen areas? I also has sunburn on shoulders, but they are not swollen. How dangerous is sunburn swelling on head?