dryness hyper acidity nose blockage reflux
teast or fungaus infections
or any associated disease causing fungus
take lot of warm water
apply nemycin h oinment in nose bd
sea water 2 drop at night to clear nose for free air
apply antiungal mouth paint locally antifungal medicines
anti allergic and antacid
but consult ent doctor who can judge the condition by look and treat avccording to diagnosis

hi i had gone through your query and understand your concerns. i would come up with the possibility of APTHOUS MOUTH may be the cause for your sufferings

possible causes include;

-Stress or tissue injury is thought to be the cause of simple mouth ulcers.

-Certain foods, including citrus or acidic fruits and vegetables (such as lemons, oranges, pineapples, apples, figs, tomatoes and strawberries), can trigger a mouth ulcer or make the problem worse.

-nutritional problems, such as vitamin B-12, zinc, folic acid, or iron deficiency and

-gastrointestinal tract disease, such as Coeliac disease and Crohn's disease are the other causes.
treatment option;
i advise you taking Homeopathic medicines gives safe and permanent cure for your complaints
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you