Alien hand sign or alien hand syndrome?

Dolado, A M; Castrillo, C; Urra, D G; Seijas, E. Varela de

doi:10.1136/jnnp.59.1.100

Cited by 16 publications

(22 citation statements)

References 4 publications

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“…[2][3][4] The alien hand syndrome has also been reported after lesions sparing the corpus callosum. [5][6][7][8][9] In the classic syndrome, the main symptom is the report of alienness with abnormal movements of the hand. In comparison with the frontal/callosal alien hand cases in which motor plans are abnormally activated and callosal pathology prevents normal transfer to the opposite hemisphere, our patient had a complicated sensory-ataxic disorder with self stimulation by the left arm.…”

mentioning

confidence: 99%

Posterior alien hand syndrome after a right thalamic infarct

Marey-López

Rubio-Nazabal²,

Alonso-Magdalena³

et al. 2002

Journal of Neurology, Neurosurgery &Amp; Psychiatry

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confidence: 99%

Posterior alien hand syndrome after a right thalamic infarct

Marey-López

Rubio-Nazabal²,

Alonso-Magdalena³

et al. 2002

Journal of Neurology, Neurosurgery &Amp; Psychiatry

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“…The unusual association of involuntary movements with parietal dysfunction has been already reported before [6][7][8][9] and Ventura et al 15 reported a 58 year-old right-handed woman who developed a left AHS after a right capsulothalamic haemorrhage. No lesion was detected in the corpus callosum and a PET scan showed a diffuse right cortical hypometabolism, mainly in the sensorimotor area.…”

Section: Discussionmentioning

confidence: 54%

“…Dolado et al 7 described a right-handed patient, with a right parietal infarct, who developed a left AHS when visual clues were removed. The authors hypothesised that dorsal parieto-occipital lesions may interfere with peristriate outflow pathways toward parietal zones, where visual somato-sensory interactions are likely to occur, and this interference may explain the emergence of the alien hand behaviour.…”

Section: Discussionmentioning

confidence: 99%

Involuntary hand levitation associated with parietal damage: another alien hand syndrome

Carrilho

Caramelli

Cardoso

et al. 2001

Arq. Neuro-Psiquiatr.

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The alien hand syndrome (AHS) usually consists of an autonomous motor activity perceived as an involuntary and purposeful movement, with a feeling of foreignness of the involved limb, commonly associated with a failure to recognise ownership of the limb in the absence of visual clues. It has been described in association to lesions of the frontal lobes and corpus callosum. However, parietal damage can promote an involuntary, but purposeless, hand levitation, which, sometimes, resembles AHS. In the present study, four patients (cortico-basal ganglionic degeneration n=2; Alzheimer s disease n=1 and parietal stroke n=1) who developed alien hand motor behaviour and whose CT, MRI and/or SPECT have disclosed a major contralateral parietal damage or dysfunction are described. These results reinforce the idea that parietal lobe lesions may also play a role in some patients with purposeless involuntary limb levitation, which is different from the classic forms of AHS.KEY WORDS: alien hand syndrome, parietal lobe, Alzheimer s disease, cortico-basal ganglionic degeneration.Movimento involuntário de levitação da mão associado a lesão parietal: uma variante da síndrome da mão alienígena RESUMO A síndrome da mão alienígena (SMA) geralmente consiste de uma atividade motora autônoma involuntária e aparentemente proposital, acompanhada de uma sensação de estranheza em relação ao membro afetado, muitas vezes associada a uma dificuldade em reconhecê-lo na ausência de pistas visuais. Tal síndrome vem sendo descrita em associação a lesões dos lobos frontais e corpo caloso. No entanto, lesões parietais podem promover um quadro de movimento involuntário de levitação da mão, aparentemente desproposital, mas que por vezes lembra uma SMA. No presente estudo, quatro pacientes (degeneração ganglionar córtico-basal n=2; doença de Alzheimer n=1 e infarto parietal n=1) que desenvolveram tal quadro clínico e cujos estudos de TC, RM e SPECT revelaram um maior dano parietal contralateral, são descritos. Os dados encontrados reforçam a teoria que lesões parietais podem representar algum papel na gênese da levitação involuntária e desproposital da mão, a qual deve ser diferenciada das formas clássicas da SMA. PALAVRAS-CHAVE: síndrome da mão alienígena, lobo parietal, doença de Alzheimer, degeneração ganglionar córtico-basal.

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“…After 60 years, Brion et al presented 3 cases with similar symptoms and identified AHS for the first time (Park et al 2012;Kikkert et al 2006). Anterior variant AHS occurs due to damage of frontal lobe and corpus callosum however in posterior variant AHS the territory of damage is in thalamus, parietal and occipital lobe (Park et al 2012;Kikkert et al 2006;Dolado et al 1995). In order to raise the clinicians' awareness of this rarely seen syndrome, we presented an AHS case in which involuntary motor symptoms emerged in left arm depending on the right parietal lobe infarction after the stroke.…”

Section: Introductionmentioning

confidence: 99%

Paroxysmal posterior variant alien hand syndrome associated with parietal lobe infarction: case presentation

et al. 2016

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Alien hand syndrome (AHS) is an involuntary and rare neurological disorder emerges at upper extremity. AHS is a disconnection syndrome with the symptoms of losing sense of agency and sense of ownership, and presence of involuntary autonomic motor activity. There are frontal, callosal and posterior types of AHS and each of them occurs depend on the lesions of different of the brain. Posterior variant is a rarely encountered AHS type compared to others. AHS, generally regarded as persistent, but rarely maybe observed as paroxysmal. In this article, we present 71 year old patient with right posterior parietal lobe infarction and developed posterior variant AHS on left arm 1 month after discharge from the hospital. To discriminate AHS from conditions such as extrapyramidal movement disorders and epileptic seizures that take part in differential diagnosis should be kept in mind by the clinicians. Wrong and unnecessary treatments could be prevented in this way.

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Alien hand sign or alien hand syndrome?

Cited by 16 publications

References 4 publications

Posterior alien hand syndrome after a right thalamic infarct

Posterior alien hand syndrome after a right thalamic infarct

Involuntary hand levitation associated with parietal damage: another alien hand syndrome

Paroxysmal posterior variant alien hand syndrome associated with parietal lobe infarction: case presentation

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