Thank you for your question. I agree with Dr Annabelle on the likely causes of your runny nose. Over 95% of patients with runny nose seen in my practice are due to Rhinitis (sensitive nose) or Sinusitis.
Other causes such as foreign bodies in the nose, nose tumour and brain fluid (CSF leak) are much rarer.
To find out more about sensitive nose, do check out my article that was previously published on Human.
Hope this helps and all the best!
