The most common cause of tinnitus due to a feeling of stuffiness in the ear is tinnitus due to various causes of abnormal eustachian tube function. The only outlet for the middle ear cavity is the eustachian tube at the back of the nasal cavity. When the eustachian tube is not draining smoothly, it can lead to a feeling of stuffiness in the ear, and may be accompanied by tinnitus. In this case, if it is caused by rhinitis, sinusitis and adenoid hypertrophy, you can consider nose spray medication, Nesuna or Reynocort. In combination with rhinitis medication, Nasal Abyssal Oral Liquid or Cangretia Rhinitis Drops. If it is caused by otitis media, consider nose spray medication and oral cephalosporin capsules or roxithromycin.