Maybe a 'simple' cold?

Maybe OTC anti-histamines? Two cautions: some drugs can 'jump' our blood pressure, and diphenhydramine (Dramamine) not recommended for those of us over about 60. Talk to store pharmacist for guidance/suggestions.

Try and find out the thing(s) you are allergic to. Docs can screen us for a lot of allergens with a blood test. (They don't have to make our backs into a giant "allergy Bingo card"). Then, of course, reduce or eliminate the allergens.

And there are just so many ... plants, stuff from outside, foods, cosmetics, soaps, laundry products (ditch the laundry softeners and 'dryer sheets'), dairy is a 'biggy' for a lot of people, mold & mildew either inside, or blowing in. Any recent purchases or new things - clothing, furniture, rugs, bedding?

Sigh, hope it's not your companion animal(s). Cut back on nuzzling and smooching, and getting licked.

If it seems to be an air-borne allergen, then ask your budget if a high-quality anti-allergen specific air filter/purifier would help. (I think "HEPA" and "very small particle diameter" are the magic words.).

Lastly, some docs can give us some 'magic shots or pills'.
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My Mom told me "no returns, no refunds, no exchanges, no replacement parts, no warranty, and the factory was closed". As she had only one child, me, I can believe the last :) .
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Someone I knew is a fan of the tissues with lotion. Using regular tissues turned her nose into hamburger :( (ICK!).