drug induced dystonic reactions are among common presentations of patients in emergency departments, and typically occur with antidopaminergic agents as their extra-pyramidal side effects. dystonic reactions usually occur within the first few hours or days after commencing a drug or dose increase. unlike other extra-pyramidal side effects, a patient may experience acute dystonic reactions (adrs...

Dystonia is a syndrome of sustained muscular contractions with numerous underlying etiologies. This review examines the varied phenomenology of dystonias, its evolving classification including recent genetic data as well as its clinical investigation and treatment. Although age of onset, anatomical distribution and family history are key elements of the investigation of dystonia, classification...

Pallidotomy was performed in a parkinsonian patient with off-period foot dystonia. Dystonia appeared at the beginning of surgery and disappeared after the first microelectrode penetration of the globus pallidus, perhaps a micropallidotomy effect. Neuronal recording during dystonia revealed that the mean firing rates were low in both the internal and external segments of the globus pallidus, and...

BACKGROUND Munchausen syndrome presenting with psychogenic dystonia is a rare condition. PHENOMENOLOGY SHOWN A psychogenic dystonia case presenting with an acute onset of retrocollis, lower limb dystonia and bizarre gait was diagnosed as Munchausen syndrome. EDUCATIONAL VALUE Recognizing psychogenic dystonia avoids unnecessary investigations and provides successful treatment.

Sensory processing is impaired in focal hand dystonia (FHD), with most previous studies having evaluated only the symptomatic limb. The purpose of this study was to establish whether the sensory system is affected in other types of dystonias and whether the contralateral hand is also involved in FHD. We used a spatial acuity measure (Johnson-Van Boven-Phillips domes) to evaluate sensory spatial...

Primary dystonia is thought to be a disorder of the basal ganglia because the symptoms resemble those of patients who have anatomical lesions in the same regions of the brain (secondary dystonia). However, these two groups of patients respond differently to therapy suggesting differences in pathophysiological mechanisms. Pathophysiological deficits in primary dystonia are well characterized and...

background : deep brain stimulation (dbs) of the globuspallidusinternus (gpi) is recommended as a promising technique for the management of the primary generalized dystonia (pgd) with dyt1 gene mutation. we present the first report of dbs results in iranian patients with dyt1 positive pgd.   methods : nine patients who suffered from severely disabling dyt1 positive pgd consecutively were recrui...

Spasmodic dysphonia is defined as a focal laryngeal disorder characterized by dystonic spasms of the vocal cord during speech. We described a case of a 22-year-old male patient who presented complaining of idiopathic difficulty swallowing that suddenly developed 6 months ago. The patient also reported pharyngolaryngeal pain, throat discomfort, dyspnea, and voice change. Because laryngoscopy fou...

Dystonia is a hyperkinetic movement disorder characterized by sustained muscle contractions that produce repetitive movements and abnormal postures. Specific information on the prevalence of dystonia has been difficult to establish because the existing epidemiological studies of the condition have adopted different methodologies for case ascertainment, resulting in widely differing reported pre...