Many things: Dry, heated, indoor air. Dry, hot, low-humidity climates, Colds (upper respiratory infections) and sinusitis, Vigorous nose blowing or nose picking. Allergic and non-allergic rhinitis. High blood pressure . Chemical irritants (e.g., cocaine, industrial chemicals, others). Injury to the nose and/or face. Deviated septum.
Answered 5/16/2018
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4 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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