Hi, welcome to the forum, you are having allergic response to some unknown allergen. The allergens or triggering factors like dust, fog, pollens etc. can cause the precipitation of these symptoms. These symptoms are exaggerated esp. in winter or cold environment.
There is particular neuronal mechanism exists. When ever you are exposed to allergen there will be release of histamine, this is responsible for raised lesions on skin leading to itching. The order may differ from individuals to individuals.
You need to identify such allergen and prevent further exposure. Oral anti histamines and low potency corticosteroids will help to reduce the symptoms. I suggest you to consult allergy specialist. Take care and regards.
You have my sympathy. Winter allergies are my worst. It is probably cedar, but it could also be mold allergy.
You might want to try sinus rinses. They are very effective for washing the gunk out of your sinuses and reducaing allergic reactions.
Feel better.
God bless.