Pulled elbow.
Pulled elbow (distal subluxation of the radial head) is a common, painful condition in young children. Although it has been well documented it is often missed, often mistreated, and generally over-investigated. Treatment is simple and effective. Without treatment the condition can continue for several days.
D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D008349:Manipulation, Orthopedic / Q000379:methods; D000092464:Elbow Injuries