[Blaschkolinear eruption with biological signs of lupus].
BACKGROUND
Acquired inflammatory dermatoses of the adult with a blaschkolinear arrangement are rare. Their cause is unknown.


METHODS
We report the case of a 35-year-old man who presented an unilateral skin eruption covering the forearm and with secondary blaschkolinear extension to the arm, the axillary region and the chest. In this particular case, the patient was positive for RNP type anti-nuclear antibodies and direct immunofluorescence was positive in both biopsies of the lesions and of healthy skin. The eruption lasted 6 months and regressed spontaneously.


CONCLUSIONS
Such cases are exceptional and the nosology is difficult to establish. A particular form of lupus erythematosus? Fortuitous coexpression of lupus antibodies and blaschkitis in an adult?
Heid
E
E
Clinique Dermatologique, Hôpitaux Universitaires de Strasbourg.
Grosshans
E
E
Gonda
J
J
Paré
M
M
Lipsker
D
D
D000328:Adult; D000974:Antibodies, Antinuclear / Q000302:isolation & purification; D001132:Arm; D001324:Autoantigens / Q000276:immunology; D001365:Axilla; D004890:Erythema / Q000209:etiology* / Q000276:immunology / Q000473:pathology; D006801:Humans; D017495:Hyperpigmentation / Q000209:etiology* / Q000276:immunology / Q000473:pathology; D008178:Lupus Erythematosus, Cutaneous / Q000150:complications* / Q000276:immunology; D008297:Male; D012075:Remission, Spontaneous; D055517:snRNP Core Proteins
D000974:Antibodies, Antinuclear; D001324:Autoantigens; D055517:snRNP Core Proteins
Eruption blaschko-linéaire avec biologie lupique.