Herpangina Workup
- Author: Sandra G Gompf, MD, FACP, FIDSA; Chief Editor: Michael Stuart Bronze, MD more...
Laboratory Studies
Herpangina is a clinical diagnosis. Laboratory studies are generally not indicated because herpangina is a mild and self-limited illness.
- Investigate the salient features of the history and physical examination, including the following:
- Season (depending on the latitude)
- Age
- Exposure history
- Clinical symptoms
- The WBC count is usually within the reference range.
- Isolation of enterovirus in cell culture remains the criterion standard for diagnosis.[7] To isolate the virus, obtain cultures from swabs of the nasopharynx. Other specimens that may produce an isolate include stool and rectal swabs, urine, serum, and CSF.
- Serum antibodies to coxsackievirus may be measured after the onset of clinical symptoms. The antibody titer should show a 4-fold rise in serial samples performed 2-3 weeks apart.
- Polymerase chain reaction can be performed for enteroviral RNA of the throat, blood, CSF, urine, feces, and tissue specimens.
Histologic Findings
No histopathologic findings are specific to herpangina.
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| Clinical Manifestations | Herpangina | HSV | Hand-Foot-and-Mouth Disease |
| Causative organism | Enteroviruses | HSV-1 and HSV-2 | Enteroviruses |
| Oral vesicular/ulcerative lesions | + | + | +1 |
| Anterior pharynx | - | + | + |
| Posterior pharynx | + | +/- | - |
| Gingivostomatitis | - | +/- | - |
| 1 Lesions may also occur on the buccal mucosa | |||

