Brittle dyskinesias after bilateral STN DBS: dissociation of microlesioning effect on tremor versus on dyskinesias
Background: Brittle dyskinesia is a complication described after subthalamic nucleus but (STN) not globus pallidus deep brain stimulation implants in Parkinson ’s disease (PD) (https://pubmed.ncbi.nlm.nih.gov/24932426/). The benefits of directing stimulation away from potentially dyskinesogenic fibers within target, with the use of segmented contacts, has not been evaluated or reported. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - August 1, 2023 Category: Neurology Authors: Z. Mari Source Type: research

A late-onset mitochondrial Membrane Protein-Associated Neurodegeneration (MPAN) case with Parkinsonism
We present a previously healthy 26-year-old man, the first child of related parents, who had normal developmental milestones and presented with a history of cognitive decline for 3 years. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - August 1, 2023 Category: Neurology Authors: T. Salto ğlu, F. Erdoğan Küçükdağli, Y. Sücüllü Karadağ Source Type: research

Anti-Ri associated ophthalmoplegia, ataxia and spastic tetraparesis revealing breast cancer
Background: Anti-Ri (ANNA2) antibodies are well-characterized onconeural antibodies. In women, breast cancer is the most frequently associated with anti-Ri mediated paraneoplastic neurologic syndromes (PNS), and brainstem involvement is a commonly reported clinical feature. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - August 1, 2023 Category: Neurology Authors: J. Moura, L. Silva, E. Santos Source Type: research

Belly dancer ’s dyskinesia: case report
Background: Belly Dancer ’s dyskinesia, also known as diaphragmatic myoclonus, is a rare syndrome involving repetitive, involuntary, and continuous movements of the abdominal wall muscles. This phenomenon is secondary to abnormal excitation of the phrenic nerve via the central nervous system or along the nerve. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - August 1, 2023 Category: Neurology Authors: K.I. Carus, E. Kobak Tur, E. Gozke Source Type: research

Speech-induced lower face dystonia – presentation of two cases
Background: Among task-specific dystonias, speech-induced focal dystonias are distinguished. There are few descriptions of speech-induced dystonias involving face, mouth, tongue, mandible, and eyelids in the medical literature. The presented cases are other examples of this rare and interesting phenomenon. (Source: Parkinsonism and Related Disorders)
Source: Parkinsonism and Related Disorders - August 1, 2023 Category: Neurology Authors: J. Kaczy ńska, Z. Jamrozik, P. Janik Source Type: research