Intranasal cryotherapy is a minimally invasive procedure for people with chronic rhinitis. Intranasal refers to anything inside the nose. Cryotherapy means “cold therapy” and refers to procedures that freeze part of the body.  Intranasal cryotherapy freezes nerve fibers of the posterior nasal nerve in the back of the nose. An overactive posterior nasal nerve can cause the nose to produce excess mucus. Cryotherapy can address the overactive nerve to help reduce runny nose symptoms.

If medical treatment has not given u appropriate relief then u can go for this, its cold ablation of posterior nasal nerve to reduce symptoms of allergic rhinitis