Therapy with intravenously administered immunoglobulins was administered, without improvement of symptoms

Therapy with intravenously administered immunoglobulins was administered, without improvement of symptoms. improvement in language and behavior. The second patient was a 14-year-old lady with classic anti-N-methyl-D-aspartate receptor encephalitis, treated successfully with intravenously administered immunoglobulins and methylprednisolone, followed by orally administered prednisone, who EPZ020411 developed chronic arthritis of the hip. The arthritis was confirmed by magnetic resonance imaging and associated to antinuclear antigen antibody positivity. One year after the encephalitis presentation, an ovarian cystic mass was identified as a teratoma. The surgical resection of the mass was followed by the resolution of the psychotic spectrum and arthritis. Conclusions Anti-N-methyl-D-aspartate receptor encephalitis in pediatric patients can present initially with neuropsychological and EPZ020411 behavioral symptoms. In the literature, the association of anti-N-methyl-D-aspartate receptor encephalitis with juvenile idiopathic arthritis is not yet described: to EPZ020411 the best of our knowledge, this is the first case reported. The link to a neoplastic lesion can explain the favorable course of encephalitis and arthritis, after the surgical resection of the mass. Early diagnosis and treatment can improve the patients outcome. Keywords: Anti-N-methyl-D-aspartate receptor encephalitis, Juvenile idiopathic arthritis, Teratoma, Psychiatric symptoms, Chorea, Speech disorders Background Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is usually a recently described disease characterized by five stages of development (prodromal phase, psychotic phase, unresponsive phase, hyperkinetic phase, and gradual recovery phase), with a prevalence of psychiatric symptoms in adult patients and neurological symptoms in pediatric patients. The presenting features are: behavioral changes, psychosis, seizures, oro-lingual-facial dyskinesia, extreme irritability, and insomnia. The symptoms are persistent, and the course is usually progressive over 4 to 8 weeks duration [1C3]. The diagnosis is based on detection of anti-NMDAR antibodies, since EPZ020411 neuroimaging and electroencephalography (EEG) are nonspecific. EPZ020411 An atypical presentation of the disease in children can result in a delay in diagnosis and appropriate treatment. Intravenous pulse methylprednisolone and immunoglobulins are the first-line treatment. Some children require second-line immunotherapy. In the literature rituximab is usually reported as useful, and the response to cyclophosphamide pulse therapy is usually satisfactory. Although the response to corticosteroids and/or immunoglobulins can be quite variable, early diagnosis of the illness can be crucial in improving the patients outcome. A tumor screen is usually mandatory in Rabbit Polyclonal to Musculin all children to detect neoplastic lesions often found to be etiologically linked to the encephalitis. Ovarian teratoma is usually often associated [4]. The outcome depends on the histological type, the spectrum of associated autoimmune diseases, and on prompt treatment with immunotherapy. Case presentation Case 1 The first patient was a healthy 8-year-old caucasian lady. Her parents were divorced and she lived with her mother, but she saw her father every week. At 7 years of age, she had developed cystitis with urinary incontinence. The condition resolved; however, her behavior changed when she started school. She became agitated and hyperactive and experienced frequent episodes of tachycardia. She would wake up in the middle of the night and jump on her bed. In addition, she became very anxious and attached to her mother, and she constantly asked her mother if she adored her. Moreover, she exhibited frequent bouts of laughing and crying during the day for no apparent reasons. She spoke like a little girl (baby talk) and her academic skills progressively worsened. A pediatric neurologist diagnosed her with stress. An EEG recording during wakefulness was normal,.