Clinically Amyopathic Dermatomyositis Caused by a Tattoo

Area of Science:

• Immunology
• Dermatology
• Rheumatology

Background:

• Clinically amyopathic dermatomyositis (CADM) is a rare autoimmune disorder.
• CADM presents with characteristic skin lesions of dermatomyositis without muscle involvement.
• Tattoos are known to potentially trigger immune responses.

Observation:

• A 22-year-old male developed CADM symptoms, including Gottron rash and interstitial lung disease (ILD).
• The patient had a butterfly tattoo with blue and red ink on his chest five months prior to symptom onset.
• No muscle weakness was clinically or laboratorially detected.

Findings:

• The case presented is the first reported instance of CADM induced by a tattoo.
• The patient's clinical presentation and lab tests confirmed a diagnosis of CADM.
• The onset of CADM symptoms correlated with the tattoo application.

Implications:

• This case highlights a potential novel trigger for CADM.
• Further research is necessary to identify specific tattoo components that elicit immune reactions.
• Understanding tattoo-induced autoimmunity could inform future clinical practice and patient counseling.