[Cutaneous granulomatous lesions disclosing ataxia-telangiectasia].

Introduction: Idiopathic cutaneous granulomatous lesions are exceptionally described in the course of congenital immunodeficiency, including ataxia-telangiectasia.

Case Report: We describe a new case of a 28-month girl who presented granulomatous skin lesions revealing a previously unknown ataxia-telangiectasia in the absence of typical neurologic signs, telangiectasia and infectious complications. The clinical aspect showed infiltrated erythemato-squamous plaques and nodules predominating on the face and limbs.

[Lichenoid contact dermatitis from the ink of a red pen].

Introduction: Numerous cutaneous inflammatory reactions have been reported in literature, after using red dyes; most of them are lichenoid reactions and occur after tattooing. Few reports have mentioned inflammatory complications after using red ink.

Case Report: A 21-year-old woman was examined for papular erythematous, pruritic lesions on the back of her left hand.

[Palmoplantar filiform parakeratotic hyperkeratosis and digestive adenocarcinoma].

Introduction: There are very few observations of filiform palmo-plantar hyperkeratosis reported. Nevertheless it's worth knowing this entity for his potential association with a visceral neoplasia.

Case Report: We report the first case of filiform palmo-plantar hyperkeratosis associated with a digestive adenocarcinoma and a polycystic kidney disease.

Erythema multiforme due to pyrazinamide.

Drug-induced erythema multiforme is reported with many antimicrobial and antipyretic medications. We present one patient who experienced erythema multiforme and urticaria after administration of pyrazinamide for treatment of cutaneous tuberculosis. The side-effects of pyrazinamide include hepatic or dermatologic disorders, but erythema multiforme has not yet, to our knowledge, been described.