Human herpesvirus 7 meningitis in an adolescent with normal immune function: A case report

Author:

Zhen Yuan-Yuan,Yang Jing,Liao Pei-Yuan

Abstract

BACKGROUND Human herpesvirus type 7 (HHV-7) is a less common herpes virus that usually causes mild, self-limiting illnesses. However, in recent years, there have been increasing reports of HHV-7 causing serious central nervous system infections, especially meningitis. The pathogenesis and clinical features of HHV-7 meningitis, particularly in adolescents with normal immune function, remain incompletely studied. Therefore, the purpose of this report is to share a case of HHV-7 meningitis in an immunocompetent adolescent with a view to deepening our understanding of the disease. CASE SUMMARY A 12-year-old female was admitted with fever, headache, and vomiting. 4 d before admission, the patient developed a fever without obvious induction, with a temperature up to 39.5 °C, no convulsions, accompanied by chills, headaches, fatigue, and no muscle aches. The patient was treated with fever reduction, which could be reduced to 38 °C; repeated high fever, accompanied by vomiting 7-8 times; and no abdominal pain or diarrhea. The patient was diagnosed with "acute suppurative tonsillitis" in a local hospital, and the blood routine was generally normal. The patient was given symptomatic support treatment such as "ceftriaxone sodium" and antiemetic rehydration for 2 d, and his condition did not improve. The patient's physical examination showed pharyngeal congestion, bilateral tonsil grade I hypertrophy, regression of purulent secretions, and cervical resistance. Ocular B-ultrasound: Opacity of the vitreous body and edema of the optic disc in both eyes. Optical coherence tomography examination showed that the macular fovea was generally normal in both eyes, with edema of the optic disc. DNA virus monitoring results: HHV-7. We gave ganciclovir antiviral therapy, dexamethasone anti-inflammatory treatment, mannitol to reduce cranial pressure, omeprazole to protect gastrointestinal mucosa, and calcium and potassium supplementation. CONCLUSION This study reports a case of HHV-7 meningitis in an adolescent with normal immune function. Through comprehensive analysis of the clinical manifestations, laboratory tests, and treatment methods of the patient, it is found that early identification and antiviral treatment are essential for the outcome of the disease. This case suggests that despite normal immune function, adolescents may still suffer from herpes virus type 7 meningitis, so clinicians should be vigilant and take effective treatment measures in time.

Publisher

Baishideng Publishing Group Inc.

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