My 4yr old woke up last night inconsolable, generally thrashing around, bending and unbending his legs, tensing them, rubbing them and crying and crying with pain, saying that they "really really hurt". It seemed to be focussed on the knee area. This has happened maybe twice before in the last 3 months (in the night) and he occasionally complains in the day that his knee hurts (usually when he has been doing lots of jumping). Is this just "growing pains" or could it be someone much more serious - just keeping thinking of Daniel Hebden-Lloyd in the Archers who had juvenile arthritis but then tell myself I am overreacting. Anyone had a similar experiences? Thank you so much. My DH is away and I felt quite panicky last night when it happened. I mentioned it to my DS today but he was quite dismissive of the night-time incident, although he clearly did remember it.