Steroid-induced acanthosis nigricans in dermatomyositis

Area of Science:

• Dermatology
• Endocrinology

Background:

• Long-term corticosteroid therapy is a common treatment for inflammatory conditions like dermatomyositis.
• The development of secondary skin conditions during prolonged immunosuppressive treatment requires careful monitoring.

Observation:

• Acanthosis nigricans developed in the groin, axillae, and neck of a patient undergoing long-term steroid treatment for dermatomyositis.
• The skin condition appeared eight years into the steroid therapy.
• The dermatosis resolved spontaneously ten years after discontinuation of steroid use.

Findings:

• The case suggests a potential link between prolonged corticosteroid use and the development of acanthosis nigricans.
• Review of additional cases and existing literature supports the hypothesis that acanthosis nigricans may have a hormonal etiology.
• Spontaneous resolution indicates the condition may be reversible upon removal of the causative agent.

Implications:

• This finding suggests a need to consider hormonal influences in patients presenting with acanthosis nigricans, especially those on long-term steroid therapy.
• Further research into the hormonal mechanisms underlying steroid-induced acanthosis nigricans is warranted.
• Clinicians should be aware of this potential adverse effect of long-term corticosteroid treatment.