My 4yo DS has had a sudden onset of pain his right leg which began a week ago. At first I thought growing pains but after doing a bit of reading it doesn't seem to match up to it. Me and DP have gone over and over to try and think if he's fallen over or had a hard knock, but we're both 99% sure he hasn't. I've spoken to his teachers in school and they're not aware anything has happened. When asked where it hurts he's pointed to his knee, shin and down to his ankle / top of foot. It seems a lot worse in the morning than it does in the evening. It's causing him to walk with a limp and walk lame like he can't bend his leg properly. I've checked his leg and there's no sign of injury so I'm baffled as to what it could be. After ringing the doctors this morning, thankfully he has an appointment this evening, but I'm just wondering if anyone else has had this happen to their child and if they came to a conclusion of what it could be. Tia.