[Parkinson's disease, progressive lumbar kyphosis and focal paraspinal myositis].

[focal myositis]

The camptocormia (bent spine ) is characterized by a severe forward flexion of the thoracolumbar spine which disappears in the supine position . Clinical case . We describe a typical case observed in a parkinsonian patient . The MRI , electromyogram and biopsy of the paraspinal muscles revealed a typical myositis pattern .This case , the sixth published to our knowledge , confirms that focal myositis is associated with the camptocormia in Parkinson 's disease . Typically it is observed in male subjects , appearing 4 to 6 years after the onset of Parkinson 's disease , in fluctuating patients treated by an association of L-Dopa and agonist . It appears quickly and becomes the most important symptom . Antiparkinsonian drugs are useless .This exceptional picture raises original pathophysiological and therapeutic questions . Systematic studies should be performed in order to detail the pathophysiological link between these 3 entities : Parkinson 's disease , focal myositis and camptocormia .