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Under normal conditions, each body part (such as individual fingers) occupies a distinct area on these cortical maps. In dystonia, these maps lose their distinct borders and overlap occurs. [ 6 ] Exploration of this initially involved over-training particular finger movements in non-human primates, which resulted in the development of focal ...
Celine Dion's diagnosis with stiff-person syndrome has called attention to the rare disorder, which causes muscle spams and rigidity in the torso and limbs.
Dystonia is often intensified or exacerbated by physical activity, and symptoms may progress into adjacent muscles. [4] The disorder may be hereditary or caused by other factors such as birth-related or other physical trauma, infection, poisoning (e.g., lead poisoning) or reaction to pharmaceutical drugs, particularly neuroleptics, [3] or stress.
Many patients with stiff person syndrome experience muscle cramping, spasms and stiffness constantly, but certain movements or emotions can trigger "a complete, whole-body spasm," Piquet, who is a ...
Spasms usually last for minutes and can recur over hours. Attacks of spasms are unpredictable and are often caused by fast movements, emotional distress, or sudden sounds or touches. [8] In rare cases, facial muscles, hands, feet, and the chest can be affected, and unusual eye movements and vertigo occur.
Myoclonus is a brief, involuntary, irregular (lacking rhythm) twitching of a muscle, a joint, or a group of muscles, different from clonus, which is rhythmic or regular.. Myoclonus (myo-"muscle", clonus "spasm") describes a medical sign and, generally, is not a diagnosis of a dis
Spasmodic dysphonia, also known as laryngeal dystonia, is a disorder in which the muscles that generate a person's voice go into periods of spasm. [1] [2] This results in breaks or interruptions in the voice, often every few sentences, which can make a person difficult to understand. [1]
Pick-up games are meant to be fun, but jumping into any sport without any conditioning, stretching or warming up can result in serious injury, Dr. Molly McDermott, a sports medicine specialist at ...