Regional ischaemic immune myopathy: unraveling a rare subtype of dermatomyopathy.

Regional ischaemic immune myopathy (RIIM) is a subtype of dermatomyopathy which has distinct histopathology features of regional muscle fibre necrosis and regeneration. This case report aims to provide an in-depth exploration of RIIM, emphasising its clinical features and the crucial role of muscle biopsy as a diagnostic investigation, as well as the potential role of immunomodulatory therapies.