For the past year I've had chronic sinusitis. CT scan shows no disease; antibiotics have had no impact. I've recently been tested for allergies; only showed minimal allergies to 3 molds and cedar. Besides the chronic drainage resulting in constant nose-blowing, coughing and throat-clearing, this condition now causes me to wheeze when exhaling. Condition worsens in the evenings. However, when PCP checks my lungs, they sound clear. Any suggestions? Also, I've had a couple of incidents of leukocytoclastic vasculitis which an internal medicine specialist doctor believes have been triggered by this chronic sinusitis. I'm praying for an answer to this mystery cause of chronic sinusitis in hopes of mitigating future outbreaks of the vasculitis.