I was diagnosed with Parkinson’s disease in 2017. I’m wondering whether pain in the face and head, mainly on the left side, is a common symptom?

No, that specific type of pain isn’t common. It sounds more like a sinus problem at this time of year, but it’s difficult to say for sure with so little information about your symptoms, so please do see your GP if it’s causing you discomfort. /Dag Nyholm