Thank you from your question. From the clinical history provided, it sounds like you may be suffering from Rhinitis (Sensitive nose). Rhinitis refers to inflammation of the nasal cavity and can be allergic (due to exposure of a known protein, most commonly house dust mites), or non allergic (due to unknown causes but may be triggered by change of weather, perfume smell etc).
Common symptoms of Rhinitis include blocked nose, clear runny nose, itchy nose and eyes, watery eyes and a postnasal drip.
Your sore throat in a cold weather may be due to postnasal drip (mucous flowing down from the back of your throat down your voice box). This may then cause inflammation of the voice box, resulting in sore throat, itchy throat, cough and hoarse voice. Mouth breathing due to a blocked nose can also irritate the throat as you bypass the humidifying and filtering functions of the nose.
It is best to consult an ENT Specialist for a check and if you do have Rhinitis, treatment with nasal steroid sprays and oral antihistamines work very well.
Hope this helps and all the best.
