Cutaneous manifestations in Steinert’s disease. Apropos of four clinical cases.

Myotonic dystrophy type 1 (MD1) (OMIM 160900, Steinert disease) is the most common muscular disease, with an estimated worldwide prevalence ranging from 0.5 to 18/10,000 (1). MD1 is an autosomal dominant multisystem disorder that affects skeletal and smooth muscles as well as eyes, heart, endocrine system, and central nervous system. Available data on skin and adnexal involvement that has been demonstrated as a hallmark of the neurological disease are still poor. The aim of this case report-based, mini review on MD1 and skin is to highlight the importance of such superficial signs to be easily detected in the physical examination, and to evaluate the occurrence of these cutaneous manifestations in presence of various degrees of the disease and gene mutations.