Abstract
Most PCPs tend to think of orthomuscular causes for AHPs like muscular torticollis. All strabismologists know of children who were sent for physical therapy when in fact they had a fourth cranial nerve palsy. Conversely, strabismologists may tend to think that all patients with an AHP have an ocular cause. The truth lies somewhere in between. In one prospective multidisciplinary study of 63 children presenting to PCPs with an AHP [1], the cause of the AHP was orthopedic in 35 (56%), ocular in 25 (40%), and neurologic in 5 (8%). No specific cause could be found in the remaining eight (13%) patients (total is more than 100% as some patients had multiple etiologies). Congenital muscular torticollis was the most common orthopedic cause accounting for 31 patients (49%). The most common ocular cause was superior oblique muscle palsy, which accounted for 12 patients (19%). In two patients (3%) with fourth cranial nerve palsy there was secondary neck muscle contracture suggesting an orthopedic cause.
Parent: “My daughter’s teacher says she always turns her head to the left while reading the overhead. She thinks Susie is just using her right eye.”
Doctor: “In fact, if she turns her head to the left it is probably because that way she can used both eyes together better, not because she is wanting to use her right eye only. Actually, if she were only using one eye, a face turn to the left usually means she is using her LEFT eye.”
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References
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Kushner, B.J. (2017). Abnormal Head Postures. In: Strabismus. Springer, Cham. https://doi.org/10.1007/978-3-319-63019-9_14
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DOI: https://doi.org/10.1007/978-3-319-63019-9_14
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