History of sinusitis. no longer congested, but have cracking, constant popping, and pressure fluctuation in my ears. some minor noise sensitivity. consistent with eustachian tube dysfunction?

Yes: Popping sounds, crackling, pressure feeling in ears are all symptoms that can occur with eustachian tube dysfunction. A history of environmental allergies, nasal or sinus congestion, upper respiratory infections can all contribute to the condition. Using a decongestant can be helpful. See your doctor for an exam of your head/neck/ears/throat to be sure of the diagnosis.

Yes: Get an ENT evaluation for Eustachin salpigitis: multiple medical therapies are avialble.