Background: Atrophoderma of Pasini-Pierini and morphea are considered to be distinct clinical entities. However, some authors say that they are closely related diseases. We encountered 5 unique cases that did not fit the criteria for both diseases.
Objective and methods: We report 5 cases with solitary atrophic lesions on the lateral-upper arm. They appeared as white to erythematous, non-indurated and slightly depressed lesions with a smooth surface, and the patients had no history of trauma or injection.
Results: Histological examinations showed slight to moderate lower dermal fibrosis without specific changes in adipose tissue. The lesions disappeared spontaneously within a year.
Conclusion: Our cases may be a benign variant form of morphea. We propose the term 'self-involuting atrophoderma of the lateral-upper arm (SALA)' for these clinical features.