LETTERS TO THE EDITOR
|Year : 2018 | Volume
| Issue : 2 | Page : 168-169
Unusual presentation of Varicella zoster virus meningitis – Role of molecular rapid diagnostics in diagnosis and antimicrobial stewardship
Vinit Suri1, Leena Mendiratta2, Suranjit Chatterjee3, Raman Sardana2, Hena Butta2
1 Department of Neurosciences, Indraprastha Apollo Hospitals, New Delhi, India
2 Department of Microbiology, Indraprastha Apollo Hospitals, New Delhi, India
3 Department of Internal Medicine, Indraprastha Apollo Hospitals, New Delhi, India
|Date of Web Publication||20-Jul-2018|
Dr. Hena Butta
Department of Microbiology, Indraprastha Apollo Hospitals, New Delhi - 110 076
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Suri V, Mendiratta L, Chatterjee S, Sardana R, Butta H. Unusual presentation of Varicella zoster virus meningitis – Role of molecular rapid diagnostics in diagnosis and antimicrobial stewardship. Ann Indian Acad Neurol 2018;21:168-9
|How to cite this URL:|
Suri V, Mendiratta L, Chatterjee S, Sardana R, Butta H. Unusual presentation of Varicella zoster virus meningitis – Role of molecular rapid diagnostics in diagnosis and antimicrobial stewardship. Ann Indian Acad Neurol [serial online] 2018 [cited 2021 Jan 28];21:168-9. Available from: https://www.annalsofian.org/text.asp?2018/21/2/168/237160
Viral meningitis may remain a diagnostic enigma without molecular techniques. Rapid molecular FilmArray assays are the great advancement for the diagnosis of difficult-to-grow pathogens such as viruses and thus can become a big tool in antimicrobial stewardship. We are reporting a case of unusual presentation of Varicella zoster meningitis which was diagnosed rapidly using molecular FilmArray assay which is based on syndromic approach covering various bacteria, viruses, and fungi in a single run rather than the detection of different pathogens using conventional/real-time polymerase chain reaction (PCR) assay.
A 24-year-old female medical student presented at our institute with severe throbbing, hemicranial right-sided headache with recurrent vomiting for 1 week. Initially, headache was mild, nonthrobbing, and without any accompaniments. After 3 days, headache worsened in severity and was localized to the right side and was associated with recurrent vomiting. The patient experienced a transient episode of facial asymmetry, dysarthria, and difficulty in holding objects with the right hand which lasted for 8 h. The patient was admitted to a local hospital where noncontrast computed tomography head revealed normal study, and the pain was relieved with nonsteroidal anti-inflammatory drugs. The patient continued to have severe headache with periodic exacerbations and vomiting, for which she was brought to our institute. On examination, the patient was conscious, lethargic, and photophobic. Blood pressure and pulse rate were normal. There was no fever, rash, pallor, cyanosis, and edema. Nervous system examination showed no focal neurological deficit and fundi were normal. Neck rigidity was not observed, and meningeal signs were absent. Cardiovascular, respiratory, and abdominal systems were also found to be within normal limits. There was no history of diabetes mellitus, hypertension, and tuberculosis. There was a history of needle prick injury from a sharp used on a HIV-infected patient 3 months prior, for which the patient took postexposure prophylaxis for 6 weeks. Her complete blood cell counts, liver function test, kidney function test, and thyroid function tests were within normal limits. Hepatitis B virus surface antigen, Hepatitis C virus antibodies, and HIV-I and II virus antibodies were nonreactive after 3 months. Cerebrospinal fluid (CSF) examination showed normal opening pressure, total leukocyte count 385/mm 3 (neutrophils 5% and lymphocytes 95%), glucose 50 mg/dl (corresponding blood sugar was 90 mg/dl) and proteins 47.1 mg/dl. Gram stain, AFB stain, and fungal smear examination of CSF were negative. Cryptococcus antigen and tuberculosis real-time PCR assay in CSF were also negative. Nested multiplex PCR assay on CSF using FilmArray meningitis/encephalitis panel (Biofire Diagnostics, Biomerieux Inc, USA) detected Varicella zoster virus (VZV) DNA. FilmArray assay was negative for Escherichia coli K1, Haemophilus influenzae, Listeria monocytogenes, Neisseria meningitides, Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus agalactiae, Streptococcus pneumoniae, Cytomegalovirus, Enterovirus, Epstein–Barr virus, Herpes simplex virus 1, Herpes simplex virus 2, Human herpesvirus 6, Parechovirus, and Cryptococcus neoformans/gattii. The quantitation of VZV genome was done later by real-time PCR (Argene, Biomerieux, France), and it was quantitated as 3099 copies/ml. The patient was managed with intravenous acyclovir for 10 days followed by oral acyclovir for 4 days with prompt relief of headache and vomiting by the 3rd day of treatment.
The incidence of neurological complications produced by VZV have been found to be 1–3/1,000 cases, and these complications are usually associated with the appearance of skin rash. The unusual clinical presentation and infrequent complication present a diagnostic challenge to the clinicians. The diagnosis of VZV meningitis/meningoencephalitis can be made by the detection of VZV DNA in CSF or in blood mononuclear cells, or the presence of anti-VZV IgG antibody in CSF or of anti-VZV IgM antibody in CSF or serum. [Table 1] compiles atypical presentations of Varicella zoster meningitis in literature where the patient was immunocompetent, and there was no history of skin rash.
|Table 1: Cases of atypical presentations of varicella zoster meningitis in immunocompetent patients|
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In the cases described in [Table 1], the cytological and biochemical examination of CSF was suggestive of bacterial meningitis. So, the antibiotics were administered before the detection of VZV DNA in patient's CSF. However, in our patient, since we could detect VZV DNA very rapidly using FilmArray meningitis/encephalitis panel, so no antibiotic was administered to the patient and it was a step in antimicrobial stewardship component of early and accurate diagnostics. In a retrospective study on VZV reactivation in central nervous system, Becerra et al. detected VZV DNA in 11 out of 519 CSF samples (2.1%), submitted from patients with a clinical diagnosis of viral meningitis or encephalitis. They observed eruption of skin lesions in only five patients (45%).
VZV meningitis may occur in immunocompetent person without prodromal illness. Rapid molecular FilmArray tests can play a great role in antimicrobial stewardship in such cases by early accurate diagnosis curtailing administration of unnecessary antibiotics. It is also important to make clinicians aware about these newer diagnostic modalities for the timely management of the patients.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed.
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Conflicts of interest
There are no conflicts of interest.
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