Persistent cough

Teenager complained of a very irritating cough and was treated by few Drs with inhaled corticosteroids which didn’t help. He did have history of dust allergy.

So I first gave her pothos and within a week about 50 percent of symptoms settled. However she still had the cough and when she started it wud be very hard to stop till she was tearing. I decided to give her 2 doses of levamisole 3 days apart.
The next week on review she came super happy as the cough had completely resolved.

Note: If cough is Long COVID symptom or other infection like TB then above treatment wont help much.