Hi, I have returned from holiday in Barbados to the UK, where we are 5 hours ahead. I was bitten twice by a mosquito while we were away. On return I slept well for the first night, but since then I have been unable to sleep, at all, for the last three nights. I am also itchy all over, while trying to sleep. I don t feel tired either, but have a headache and black circles under my eyes, so lack of sleep Is taking a toll on me. Any suggestions? Any help is gratefully received.