Hi ,, Nasal block might be one the symptoms of DNS as you have mentioned. Catching cold is one of the indications of low immunity. Ayurveda answer is correction of diet & routine along with simple Ayurvedic medication & oil application.
Next Steps
pl consult Online
Health Tips
Sip warm water frequently, steam inhalation helps you
Also instill warm cow ghee drops in both nostrils
Avoid cold foods, and also the food items which increases your problem.