Since Using Roaccutane, My Face has Been Very Dry and I Don't Sweat on My Face?

i used roaccutane 50 tablets of 20 mg (isotretinoin) and since than my face are very dry and i dont sweat in the face Area . this was about 7 month ago ... can it be from roaccutane and what can i do about it ...?? is there any kind of foods i should or shouldn't eat ? thank you very much

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