Case 1:

A 14-year-old boy, with no relevant past medical history, presented with a brown-colored skin lesion on his chest, which had appeared one year earlier. The lesion was cleared with 70% isopropyl alcohol, proving the diagnosis of terra firma-forme dermatosis.

Case 2:

A 12-year-old girl was referred to our consultation. She was obese and had insulin-resistance. On physical examination she had significant hyperpigmentation on her neck and axillae, which was interpreted as acanthosis nigricans. Nonetheless, we performed swabbing of the lesions with 70% isopropyl alcohol, which immediately cleared the skin, confirming the diagnosis of terra firma-forme dermatosis.

In conclusion, terra firma-forme dermatosis is a benign and easily solved dermatosis. Nonetheless, its unesthetic appearance is often a cause of great distress to the patient. We aim to increased awareness of this entity.

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