Tinnitus and mucus at back of throat of my throat. went to an ent and he prescribed hidrist 24mg twice a day. can this be a cause a csf leak or it will clear. doc said i must see him after two week. i keep having to clear my throat and spitting out?

CSF leak is a serious problem; no, you likely do not have this condition. You probably have upper respiratory tract infection (viral illness) with sinusitis with postnasal drainage which can cause all the symptoms. I think your condition will resolve by time, good luck.

Agree with Dr Le, as this appears most likely of sinus origin. CSF leaks are popular online diagnoses discussed by non-medically trained individuals, and actually are rather uncommon, and even less commonly proven. Do not worry about this.