Autism is the reason for the symptoms. The symptoms can also be reduced by masking.
Masking is putting on a face to _hide_ symptoms from others to appear more 'normal'. It's f-ing exhausting. The symptoms never go away.
In this case when you reduce symptoms with masking then you get different symptoms, like exhaustion.
And yes, this doesn’t seem healthy for the person who is masking, especially when taken to the extreme levels.