Nasal congestion
More common causes
Vasomotor rhinitis
Allergic rhinitis
Cocaine use disorder
Amphetamine use disorder
Chronic rhinosinusitis
Nasal polyps
Empty nose syndrome
Ketamine use disorder
Acute viral rhinosinusitis
Acute allergic fungal rhinosinusitis
Acute bacterial rhinosinusitis
Less common causes
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Uncommon causes
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Pharmacological causes
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