Seizures as a cause of shoulder dislocation have been reported. Evidently, the force of shoulder muscle contractions during the seizure is enough to pull the shoulder out of joint. This can occur not only with epileptic seizures but also during alcohol or other types of drug withdrawal and diabetic seizures.
The initial shoulder dislocation is distressing. But there can be some additional problems to be concerned about. For example, a second (or third) dislocation is possible with future seizures. The more forceful the seizure, the more likely associated shoulder injuries can occur.
For example, rotator cuff tears (tendons and muscles surrounding the shoulder and holding it in the socket) are possible. The force of the humeral head as it shifts out of the socket may be enough to put a ding or defect in the bone. Blood vessels can get torn and nerves stretched or pinched. Any of these complications can cause further problems.
But fortunately, all of this is rare. Most of the time, seizure disorders are able to be controlled with medications and injuries of this type never occur. But a little education and preparedness go a long way.
So tuck this information in the back of your mind but don’t let it convince you that this will happen to your daughter. Talk with her physician about the likelihood of any of these kinds of complications to get a better perspective on the big picture.