Parry‑Romberg syndrome (PRS) with Hemi masticatory spasm (HMS) is quite an uncommon overlapping phenomenon which very often mimics jaw closing dystonia. A previously healthy 35‑year‑old female, during her 5th month of pregnancy, started developing intermittent unilateral painful spasms of the jaw while conversation, clenching of teeth, or eating, which led to frequent tongue bites. The spasms were worsened during pregnancy. She used to do certain manoeuvre like sensory tricks in the form of touching the involved side of the face to relieve the symptoms. Apart from this, she developed progressive hemifacial and hemitongue atrophy.
Other medical and neurological examinations were normal. Laboratory investigations, as well as neuroimaging, were noncontributory. The spasm responded to carbamazepine but hemifacial atrophy persists. To our best knowledge, onset and worsening of this syndrome…
