* Allergies, like hay fever, allergic reaction to pollen or grass * Common cold or influenza * Rhinitis medicamentosa, a condition of rebound<unk>  brought on by extended use of topical decongestants (e.g., oxymetazoline, phenylephrine, xylometazoline, and naphazoline nasal sprays) * Sinusitis or sinus infection * Narrow or collapsing nasal valve * Pregnancy may cause women to suffer from<unk>  due to the increased amount of blood flowing through the body. * Nasal polyps * Gastroesophageal reflux disease (theorized to cause chronic rhinosinusitis- the "airway reflux paradigm") * COVID-19 Nasal obstruction Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology. It is difficult to quantify by subjective complaints or clinical examinations alone, hence both clinicians and researchers depend both on concurrent subjective assessment and on objective measurement of the nasal airway. Prevalence of kyphosis has been linked to nasal obstruction in a study.
Nasal congestion
Post-nasal drip
Cough
Saddle nose
Laryngospasm
Ear pain
Hajj Cough
Habit cough