My 3 year old boy often wakes up at night with pain in his knees and legs. What could it be?

Good evening ma'am,

Children of this age who are growing very fast may complain of such pains from time to time.

On the other hand, it is recommended to consult a doctor to make sure that the pains are not hiding a more serious problem.

So I recommend that you see a doctor in the next 3-5 days.

Happy evening :)

Alexandre Chagnon, pharmacist