I'm having panic attacks quite regular but a strange pressure/trickling sensation in my head when it happens is worrying me more, is this normal?

Maybe; worth a trip: Many people "hold" or express their tension with their body, particularly true with anxiety and depression. Anxiety can keep your sympathic nevous system on alert. Other neurological issues and other disorders can trigger like experiences. Your primary care doctor is one of the best first stops to explore what is going on. Reach out while you're motivated!