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rhinitis

rhinitis

introduction

  • viral rhinitis (eg. Common Cold virus) and allergic rhinitis are very common causes of rhinitis
  • autonomic stimuli have a greater effect on patients with nonallergic rhinitis than on those with allergic rhinitis
  • autonomic imbalance favoring the parasympathetic system increases nasal blood flow, edema, and secretions, creating an overall presentation of rhinorrhea and nasal obstruction

types of rhinitis

allergic rhinitis (hay fever)

NARES

  • non-allergic rhinitis with eosinophilia syndrome (NARES)
  • “perennial intrinsic rhinitis”
  • some researchers believe that this condition may be a precursor to the aspirin triad of intrinsic asthma, nasal polyposis, and aspirin intolerance
  • a distinguishing feature of NARES is the presence of eosinophils, usually 10-20% on nasal smears

viral rhinitis

  • eg. the common cold (rhinovirus), coronavirus, adenovirus, parainfluenza virus, respiratory syncytial virus, or enterovirus
  • viral infections are generally self-limited and resolve within 7-10 days

vasomotor rhinitis

  • excessive use of nasal vasoconstrictors

occupational rhinitis

  • symptoms are usually due to an inhaled irritant (eg, metal salts, animal dander, latex, wood dusts, chemicals).

hormonal rhinitis

  • the most common hormonal causes of rhinitis are pregnancy, menstruation, puberty, use of exogenous estrogen, and known or occult hypothyroidism.

drug-induced rhinitis / nasal stuffiness

gustatory rhinitis

  • occurs after eating, particularly hot and spicy foods
rhinitis.txt · Last modified: 2018/01/09 23:49 (external edit)