whitescales

Hi, I just joined this forum for help with my betta fish. She’s been sick for maybe a week and a half. I noticed some white spots on her that at first kinda looked like ick to me so i treated once for that in her five gallon tank. She has had ick before, maybe six months ago from some tetras...

can anyone advise me. my fighter has, in the last two days, had a strange looking white patch on his scales next to his tail fin(not on the fin) also his dorsal is half missing. is it fin rot? does fin rot affect scales? please help!!  i would upload photos but i cant seem to get the files small...