Camptocormia as a presentation of generalized inflammatory myopathy.

[focal myositis]

Camptocormia is an abnormal truncal flexion posture that occurs while walking or standing . It is usually caused by various hypokinetic movement disorders such as Parkinson disease and multiple system atrophy . Myopathy or motor neuron disease can also be infrequent causes of camptocormia . Paraspinous muscle biopsy usually reveals focal myositis , regardless of the etiology of camptocormia . We describe the first case of generalized inflammatory myopathy with prominent camptocormia and proximal muscle weakness . Muscle biopsy of the quadriceps confirmed the diagnosis of polymyositis , and the posture showed modest improvement in response to steroid treatment .