title: Paravertebral polymyositis.
abstract: Pains in the back are usually of vertebrogenic etiology, though such discomfort can be caused by a primary muscular involvement as well - polymyositis of paravertebral muscles. Five patients were studied in the present investigation with this quite rare disease. Four of them had the diagnosis confirmed by histology, the last patient could not have the biopsy performed as she was already on a successful corticosteroid therapy. Histopathology of the muscles demonstrated a polymyositis of the parenchymatous type. Owing to a considerable polymorphism showed by the troubles and often also coincidence with the vertebrogenic component, the diagnosis and classification of primary chronic polymyositis face a series of difficulties. The disease becomes clinically manifested by muscle pain, both spontaneous and on palpation, atrophies and frequent muscle contractions. These symptoms can then result in disorders affecting the dynamics and statics of the spine. The possible participation of repeated microtraumas as one of the factors contributing to the origin of polymyositis is also discussed on the present study. The disease is treated in the same way as most of the other collagenoses, the primary chronic forms showing a much more favourable prognosis than the secondary chronic ones developing from acute and subacute forms.
authors.forename: O
authors.initials: O
authors.lastname: Rozhold
authors.forename: K
authors.initials: K
authors.lastname: Vojácek
authors.forename: R
authors.initials: R
authors.lastname: Jemelík
mesh_terms: D000328:Adult; D000368:Aged; D001416:Back Pain / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009135:Muscular Diseases / Q000150:complications* / Q000175:diagnosis / Q000473:pathology