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Clinical diagnosis of multiple system atrophy is challenging and many patients with Lewy body disease (i.e. Parkinson's disease or dementia with Lewy bodies) or progressive supranuclear palsy are misdiagnosed as having multiple system atrophy in life.

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Recent case reports suggest a possible causal correlation between antecollis and pramipexole. Here, we report the case of a 62-year-old Italian man with a 2-year history of Parkinson's disease (PD) and cervical spondylosis for which he was treated with pramipexole. He developed severe neck rigidity immediately after an inguinal hernia operation but several months after introduction of pramipexole.

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Introduction: 'Dropped head sign' relates to a severe disproportionate antecollis in parkinsonism. We present the first report of a rotigotine-induced dropped head sign in a patient with suspected idiopathic Parkinson's disease, which was later defined as multiple system atrophy. The 'dropped head sign' is considered a rare symptom of unknown etiology in parkinsonian disorders, though a disproportionate antecollis is frequently observed in multiple system atrophy.

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We sought to explore the phenomenon of disproportionate antecollis in multiple system atrophy (MSA) and Parkinson's disease (PD). The etiology is much debated and the main issue is whether it represents a primary myopathy or is secondary to the underlying motor disorder. The clinical, electrophysiological, and biopsy data of MSA or PD patients with antecollis were reviewed.

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Pramipexole-induced antecollis in Parkinson's disease.

J Neurol Sci

January 2008

Department of Neurology, The Jikei University School of Medicine, 3 25 8, Nishi-Shinbashi, Minato-ku, Tokyo, 105 8461, Japan.

We report a case of antecollis, or dropped head with Parkinson's disease (PD) induced by pramipexole, a nonergot dopamine agonist. An 80-year-old woman presented with progressively severe neck flexion, which developed within a few weeks of taking pramipexole at 3 mg/day. She had a disturbed gait and complained of difficulty in daily activity because of restricted visual field and severe stooped posture.

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