[Neonatal myasthenia gravis].

Background: Myasthenia gravis, an autoimmune disease of young women, is due to the dysfunction of neuromuscular transmission. The newborn of a myasthenic mother inconstantly presents a transitory neonatal myasthenic syndrome. Maternal aggravation, or even myasthenic crisis with respiratory failure, can occur in the first three months post-partum.

[Pneumococcal meningitis revealing dysplasia of the bony labyrinth in an infant].

Background: Dysplasias of the bony labyrinth are frequently associated with cerebrospinal fluid fistula and are usually discovered because of recurrent meningitis.

Case Report: A 1 year-old infant was admitted for a pneumococcal meningitis which appeared 2 days after the occurrence of a clear otorrhea from the right ear. The same organism was isolated from the otorrhea fluid, which also contained cerebrospinal fluid as confirmed cytochemically.

[Homozygote CB deficiency revealed by recurrent Neisseria meningitidis infections in an adolescent].

Background: Meningococcal infections associated with late complement component deficiency are rarely severe and usually occur during adolescence and adulthood. We report severe manifestations in a boy in whom the first episode appeared early.

Case Report: A 14 year-old gypsy boy was admitted because of a febrile meningococcal meningitis that was complicated by a rapidly extensive and necrotic purpura, obnubilation and clotting abnormalities without hemodynamic anomalies.

[Hyperglycemia revealing neonatal infection].

Background: Hyperglycemia as the first manifestation of neonatal sepsis is rare.

Case Report: A breast-fed neonate was admitted at the age of 6 days because of vomiting. Group B streptococci had been isolated in secretions of the ear at birth but the neonate had not been treated.