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A 21-month-old child with acute febrile dermatosis, leukocytosis and skin biopsy showing intradermal neutrophil infiltrate was diagnosed as suffering from Sweet syndrome. This syndrome is rare in children, described heretofore in only seven paediatric patients. The clinical and histological features, differential diagnosis, as well as the potential association with more widespread systemic diseases are discussed.

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Neonatal hyponatremia can be caused by increased sodium losses, inadequate sodium intake, increased maternal or neonatal water load or by water retention secondary to excess of ADH release. Cocaine use by pregnant women has not as yet been reported to correlate with hyponatremia in the newborn infant. We present a case of an infant whose mother used cocaine regularly during the last stages of pregnancy and who developed hyponatremia in the first week of life. A mechanism is proposed and discussed.