Gear Wheel Symptom

The cogwheel symptom (Schilder's symptom) is one of the clinical signs of extrapyramidal syndrome, which manifests itself in the form of uneven jerking movements when examining muscle tone. This symptom is one of the main signs of parkinsonism.

The occurrence of the cogwheel symptom is associated with impaired coordination of movements and imbalance. When examining muscle tone in patients with parkinsonism, there may be sensations of intermittent, stepwise movement in the form of uniform jerking movements. This occurs because the extrapyramidal system, which is responsible for coordinating movements, begins to work incorrectly.

The cogwheel symptom can be caused by various reasons, including diseases associated with damage to the extrapyramidal system, such as parkinsonism, Parkinson's disease, Wilson-Konovalov disease, Alzheimer's disease and others. Also, this symptom may be associated with taking certain medications, such as antipsychotics, antiparkinsonian drugs and others.

To diagnose parkinsonism, it is necessary to conduct a number of tests, including blood tests, magnetic resonance imaging of the brain and other diagnostic methods. Treatment for parkinsonism may include medications and physical therapy. In some cases, surgery may be required.

Thus, the cogwheel symptom is an important clinical sign of extrapyramidal disorders, which can be caused by various reasons. Diagnosis and treatment of parkinsonism require special studies and treatment methods.

**The “Gear Wheel” symptom** is a pathognomonic sign of drug treatment with neuroleptics and neuroleptics and their derivatives, characterized by the appearance of a feeling of **discontinuity when examining the muscle tone of the limbs.** In this case, **stepped movements and a peculiar disturbance of smoothness may occur,* * which patients describe as