My Son Began Complaining Of Leg Pain The Other Day. . . And Now Is Having Trouble Walking. . . even In The Morning.

My son began complaining of leg pain the other day. . . and now is having trouble walking. . . even in the morning. His left knee is a touch swollen and he is avoiding moving it or putting too much pressure on it. . . he did insist on getting the [...]

My 2 Yr. Old son has been complaining of itchy / painful hands and feet at night. ?

No rash or sign of inflammation. Only complaint is that at night and wakes up at night crying and pointing to his hands and feet. Any other child has had this problem before? Any suggestions?