Hemihypomimia and lingual tremor in Parkinson’s disease: A case report

• Left-side hemihypomimia is a rare sign in Parkinson’s disease (PD). • Lingual tremor and hemihyomimia are presented as a unique finding in PD. • Speech and swallowing impairments may be associated with these findings. • Understanding the underlying mechanisms of early onset hemihypomimia and lingual tremor deserves additional investigations. Parkinson's disease is a progressive nervous system disorder that can cause many other non-motor and motor symptoms in addition to tremors and stiffness (Emamzadeh et al., 2018). Hemihypomimia and lingual abnormalities are rare occurrences in Parkinson’s disease (PD). The following report describes a unique case of this dual symptomology in a case of short disease duration and early onset PD. In addition, prior case reports have shown a predominantly right-sided effect (Panichelli & Spitz, 2021; Ozekmekçi et al., 2007; Zingler et al., 2005). Hemihypomimia (HH) can persist for several years and is consistent with normal asymmetrical involvement of the limbs (Ozekmekçi et al., 2007). HH mostly appears in the lower portion of the right side of the face (Bologna et al., 2016). Lingual tremor and strength deficits are a rare phenomenon in PD, and the implications for speech and swallowing are important for QOL considerations.