Isothiazolinone is known to be a sensitizer and a frequent cause of contact dermatitis in adults. Cases of contact dermatitis have also recently been reported in children. Derivatives of isothiazolinone, such as methylisothiazolinone (MI) and methylchloroisothiazolinone (MCI), are commonly used in the care products of babies and children. This allergen should not be missed.
Le syndrome de Sweet est une dermatose neutrophilique rare. Les patients présentent classiquement une apparition brutale de lésions cutanées douloureuses sous forme de papules, nodules ou plaques érythémateuses asymétriques localisées préférentiellement sur les extrémités supérieures, le visage et le cou, associées à une fièvre élevée, une neutrophilie et, à l'histologie, un infiltrat diffus de neutrophiles dans le derme. Le plus souvent idiopathique, il peut être en lien avec des infections respiratoires et gastro-intestinales, avec des maladies inflammatoires de l'intestin, avec une grossesse ou une vaccination. Des formes médicamenteuses et paranéoplasiques ont été rapportées. A l'aide d'images cliniques et de deux cas cliniques, nous souhaitons rappeler les points essentiels nécessaires au diagnostic et à la prise en charge de cette maladie.
Sweet's syndrome, a diagnosis to keep in mindSweet's syndrome is a rare neutrophilic dermatosis. Typically, patients present with a sudden onset of tender erythematous skin lesions (papules, nodules, and plaques), of asymetrical distribution, located preferentially on the superior limbs, face and neck, associated whith high fever and neutrophilia. Histologicaly, there is a diffuse infiltrate of neutrophils located in the dermis. Most of the time idiopathic, it may be associated with a respiratory or gastrointestinal infection, with inflammatory bowel disease, pregnancy and vaccination. A drug-induced form and a malignancy-associated form have been described. Based on illustrations and two clinical cases, we wish to focus on the diagnostic strategy and the management of this disease.
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