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Updated: Jun 11, 2026

A Rat Model of Compound Acne
Published on: November 1, 2024
Back and face involvement in hidradenitis suppurativa
Florence Poli1, Pierre Wolkenstein, Jean Revuz
1Departement of Dermatology, Groupe Henri-Mondor, Albert-Chenevier, AP-HP, Paris, France.
Background:
Hidradenitis suppurativa (HS) may be associated with face and back lesions which are considered as acne.
Objective:
To describe the skin lesions of a group of patients with HS.
Methods:
Twelve patients were selected from a series of 648 patients on the basis of their specific skin lesions.
Results:
The patients (mostly male) had typical hidradenitis. On their face or back they had one or several of the following skin lesions which are not seen in acne: hypertrophic rope-like bridged scars, raised plaques with multiple carbuncle-like openings or with ulcerations, 'worm-eaten scars' and coalescent nodules with round ulcerations. All patients had deep round scars. Several had a pilonidal cyst or large epidermal cysts. Isotretinoin had been used by 7 patients with no effect.
Conclusion:
Some HS patients have specific lesions of the face and back which are not acne and have to be treated differently.
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