Comments on ‘Auricular Acupuncture Effect on Facial Contraction via Middle Ear Muscles Reflexes’

Abstract Introduction This letter provides a critical appraisal of the case report titled “Auricular Acupuncture Effect on Facial Contraction via Middle Ear Muscles Reflexes.” The original report attributes the observed facial contractions to middle-ear muscle reflexes triggered by auricular acupuncture. However, several aspects of the report and its supplementary videos warrant further clarification. Results Review of the provided materials suggests that the observed facial contractions may have been elicited by high-intensity auditory stimuli rather than by acupuncture itself. Visual analysis indicates that the contractions may originate from the masseter muscle. Due to fascial continuity between the masseter and regional mimic muscles, such contractions may mimic true facial muscle activity. Additionally, alternative diagnostic entities—including hemimasticatory spasm and hemifacial spasm—should be considered, as both can present with unilateral involuntary contractions. Discussion Differentiation between masseteric and mimic muscle involvement is essential for accurate interpretation. Clinical examination methods such as palpation, along with electrophysiological techniques including electromyography and electroneurography, may provide valuable diagnostic clarification. Furthermore, confounding clinical factors—such as prior esthetic interventions and occlusal or dental abnormalities—should be taken into account, given their potential to influence masseter muscle activity. Conclusion If the observed contractions originated from the masseter muscle, the hypothesis attributing them to middle-ear muscle reflexes may require reconsideration. This commentary emphasizes the need for clearer differentiation of underlying mechanisms and encourages additional clinical and electrophysiological evaluation to enhance diagnostic accuracy.