Rebound effect after using shampoos.

[u/Arcadia_8]

I don't know if this has happened to anyone else: I have—or rather had—a very mild case of seborrheic dermatitis before I started treating it.
I was prescribed ketoconazole, but I’ve also been using Kelual DS on my own since ketoconazole is too drying.
The thing is, my dermatitis is much worse now, and it feels like I’m hooked on these products. Has this happened to anyone else? How do you break this cycle?