Conclusion
Rhinorrhea, also known as a runny nose, is common and linked with many potential causes. The most common causes of the condition include a sinus infection, allergies, COVID-19, the common cold, allergies, and the flu. Rhinorrhea may also be characterized by having a thick or clear mucus. You can use a saline spray and blow your nose gently to treat the condition. Your doctor may also prescribe drugs that can help with a runny nose.
References
[1] https://rarediseases.org/rare-diseases/churg-strauss-syndrome/
[2] https://medlineplus.gov/antidepressants.html
[3] https://www.mayoclinic.org/diseases-conditions/erectile-dysfunction/diagnosis-treatment/drc-20355782
[4] https://my.clevelandclinic.org/health/drugs/21223-antihistamines
[5] https://www.medicalnewstoday.com/articles/316953
[6] https://medlineplus.gov/lab-tests/cerebrospinal-fluid-csf-analysis/
[7] https://medlineplus.gov/antibiotics.html