My husband has been suffering with headaches for about 2 yrs now.He always said it was his sinuses. He had a cat scan done a week ago it showed sinusitis. Can anyone tell me if headaches are common with this? His headaches are sometimes so severe he is miserable.He has become grouchy,laying around all the time. He has tried every over the counter medicine, nothing helps.He has been on claritin and an antibiotic for about 4 days with no relief. Help Please!