I got antaxia when working on a mission. I first tried to cure it by going to a temple, but people kept telling me I looked sick. I went to buy a potion from the lady in Whiterun, who said I looked sick with antaxia. I bought a cure all potion and nothing changed.

I'm not sure if I am cured or not. After that, strangers stopped telling me I look sick but the lady who sells potion in Whiterun still said I looked like I had antaxia. Is there any way to tell if I actually no longer have antaxia or if the cure is glitching and not curing my illness?

selfish bump

to look at diseases you go to the magic menu then down to below powers, there will be something with your racial benefits and if you have been blessed by a temple, it should say there

also, the lady in whiterun says that all the time.

Had it and was cured with a cure disease potion.

First of all its ataxia, second of all its something the npcs just say to you, you dont really have a disease.

Ataxia is a non-specific clinical manifestation implying dysfunction of the parts of the nervous system that coordinate movement
(i am guessing its an attempt at humor when the npcs say you have ataxia)

you should try to sleep more. in game. not irl