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Stimulus-Induced Drop Episodes in Coffin-Lowry Syndrome
Pediatrics Nelson and Hahn 111 (3): e197.

Supplemental Videos



Figure 1. In this 16-year-old boy with Coffin-Lowry syndrome, an unexpected pull on the shoulders by the examiner leads to a sudden loss of tone with an abrupt drop to the ground. He recovers rapidly and there is no loss of consciousness.
   
Figure 2. In our second patient with Coffin-Lowry syndrome, sudden drop episodes began at five years of age. This video clip demonstrates that the drop episodes could be triggered by bumping into the furniture while backing up. Sometimes they were triggered by a gentle pull on his EEG leads. At 13 years of age, episodes were triggered by a loud noise. These episodes had changed in characteristic, and consisted of sudden arm extension and forward lurching of the body. If they occured while he was standing, he would fall to the ground.





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