 [ Symptoms ] my husband has sinus headaches that wake him up every night decongestents do not help and ct scan showed nothing he will often take steam showers to break up the congestion in his head then have to sit up for 2 or 3 hours for his head to drain enough to go back to bed [ Disease ] two things first a ct scan is the definitive test for sinusitis if it was clear then i would question that he is having sinus headaches there are a hundreds of different types of headaches so consider seeing a neurologist for a higher level evaluation second taking decongestants at night is not a good idea because of their stimulent effect and the fact they cause annoying drainage an antihistamine may be considered or perhaps a trial of using nasal corticosteroid sprays to reduce the inflammation