My son has variously had eye twitching, cough and now is sniffing and blowing air out of his nose as a nervous thing. It's definitely this, been to optician and GP and I've no idea how to start with correcting it. Ignore it? (Hard as it's so irritating but then crushing as his face falls if we mention it) , doctor, psychology support? It's driving me mad and worrying me in equal measure. His brother is driven crazy by it and I fear his classmates too as he's mentioned not being as friendly with his formerly great pals. Help! Anyone had the same?