Severe & Strange Allergy Symptoms

I suffer from chronic & severe allergies. The weird thing is that they only effect me when I am sitting. If I am moving around I'm otherwise fine. When I sit for as few as 15 mins, I'll start to experience symptoms. The longer I sit, the the greater the symptoms. Symptoms include:stuffy nose, runny nose, sneezing, chest congestion, severe bloating, irritated glands on either side of my hard palate in my mouth, skin irritation and itchy skin breakouts. While the breakouts occur on various parts of my body, they occur mostly on my face. When I begin to move around the symptoms diminsih. If I haven't been sitting long, they go away quickly... I've seen all sorts of specialists and no one has any answers. I'd greatly appreciate anyone pointing me in the right direction.