The palmomental reflex sign is also known by various names such as the Marinez-Radudavich sign or the palmomental reflex. This reflex is diagnosed in patients with Parkinson's disease and progressive brain diseases. It manifests itself by engaging the muscles of the eyelids, cheeks and
The history of this symptom goes back to 17th-century medicine, when Italian physician Domenico Marinescu and physician Cesare Radovic noticed patients with lost balance, weakened lower limb muscles, and erratic eye movements. Other symptoms were later discovered, such as trembling of the mouth, decreased muscle strength, drooping upper lip, difficulty swallowing saliva, and dysfunction of the laryngeal muscles.
In 2019, American neurologist Borislav Strelkov and his colleagues discovered a connection between impaired brain connectivity between the right hemisphere and the anterior frontal cortex (which controls movements of the face and lips) with the palmar-mental symptom. Testing of patients exhibiting palmar-mental symptoms showed increased alpha wave activity in the right frontal region, indicating the presence of brain disease
The Palmo-Chin sign is a reflex movement that occurs in response to pain in the palm or finger. In this case, a person, feeling pain, brings his palm and chin towards himself, thereby trying to protect himself from pain. This is a protective mechanism that allows us to avoid additional irritation in the area of the hand or finger.
The Palm-Chin symptom was first described by the French surgeon Henri Marinescu in 1879, and a little later this symptom was scientifically substantiated by the Russian professor Nikolai Radbav. Today, this reflex is one of the diagnostic signs of cholecystitis, appendicitis and other diseases of the abdominal cavity.
Symptoms of palmar