Restless Head Syndrome and Burning Mouth Syndrome: Clinical Overlap and Diagnostic Pitfalls in Orofacial Pain

Restless Head Syndrome (RHS) and Burning Mouth Syndrome (BMS) are rare, underrecognized causes of orofacial discomfort that are frequently misdiagnosed. This review maps the available literature on both conditions, examines their proposed relationship to restless leg syndrome (RLS) and to each other, and appraises the role of dopaminergic therapy. A literature search was conducted in PubMed and ScienceDirect for publications from January 2000 to December 2024 describing the clinical presentation, diagnosis, or treatment of RHS, BMS, or craniofacial variants of RLS. The evidence consisted predominantly of case reports and small case series. RHS and other craniofacial RLS variants presented with rest-associated, evening-predominant discomfort that was relieved by movement and responded to dopaminergic agents. Only one small case series described patients with BMS who also fulfilled RLS criteria. The evidence supports clinical similarities rather than a confirmed association or shared pathophysiology. Clinicians should consider atypical RLS variants in the differential diagnosis of unexplained orofacial sensory symptoms; prospective studies are needed before firm diagnostic or therapeutic conclusions can be drawn.