Bloch, F., Houeto, J. L., du Montcel, S. T., Bonneville, F., Etchepare, F., Welter, M. L., ... & Agid, Y. (2006). Parkinson’s disease with camptocormia. Journal of Neurology, Neurosurgery & Psychiatry, 77(11), 1223-1228.

Camptocormia is defined as an abnormal flexion of the trunk that appears when standing or walking and disappears in the supine position. The origin of the disorder is unknown, but it is usually attributed either to a primary or a secondary paravertebral muscle myopathy or a motor neurone disorder. Camptocormia is also observed in a minority of patients with parkinsonism.