My 5yo DS has been blinking constantly for about the last 3 months. I had his eyes tested and although a little short sighted all seemed well. It does appear to be worse if he is confronted or in the 'spotlight' - does anyone know if this could be a nervous tick? If so, what do I do about it? We have just returned from a 1 weeks family holiday and I must say that it didn't seem so bad whilst we were away..... advice please.