Your described symptoms are consistent with chronic sinusitis. The sensation of “something freezing” inside the head and seasonal aggravation further point to sinus-related dysfunction, possibly due to poor sinus drainage or mucosal inflammation.
With other tests being normal, (brain MRI,
thyroid,
sugar, BP, etc) a nasal origin like sinusitis becomes a stronger possibility.
Next Steps
Consult an ENT specialist for a diagnostic nasal endoscopy. This in-clinic procedure helps visualize the nasal passages, sinus openings, and any polyps or mucosal swelling.
Based on the findings, you may be prescribed long-term medical management (nasal steroid sprays, antihistamines, saline irrigation, etc.).
In some cases, if symptoms persist or sinus drainage is blocked, Functional Endoscopic Sinus Surgery (FESS) may be considered.
Health Tips
Avoid cold and sweet foods if they worsen your symptoms.
Minimize dust and smoke exposure (wear a mask when cleaning or outdoors).
Maintain good hydration and avoid allergens.