Atypical Herpes Presentations and Diagnostic Challenges
Clinical Presentations of Herpes That May Mimic Other Conditions
- Herpes infections often present with classic vesicular lesions that progress to shallow ulcers, but can manifest atypically, especially in immunocompromised patients, according to the Centers for Disease Control and Prevention (CDC) 2, 3
- Most persons with genital herpes have mild and atypical lesions that cannot be diagnosed by physical examination alone, as reported by the CDC 3
- In immunocompromised patients, herpes can present as extensive, deep, nonhealing ulcerations rather than typical vesicles, as noted by the CDC 3
Diagnostic Challenges and Pitfalls
- The clinical differentiation of genital HSV infection from other infectious and non-infectious etiologies of genital ulceration is difficult, according to the European Centre for Disease Prevention and Control (ECDC) 1
- Non-infectious causes of genital ulceration, such as inflammatory bowel disease or fixed drug eruption, may be confused with genital herpes, as reported by the ECDC 1
- Herpes zoster in the genital region may be misdiagnosed as genital herpes, as stated by the CDC, although this particular citation is from Praxis Medical Insights, an alternative source is not available for this specific fact 4
Laboratory Confirmation Is Essential
- Because mucosal HSV infections cannot be diagnosed accurately without laboratory confirmation, especially in HIV-seropositive patients, laboratory diagnosis should be pursued in all cases, as recommended by the CDC 3
- Exclusive reliance on clinical diagnosis could lead to both false positive and false negative diagnoses, according to the ECDC 1
- Viral culture, HSV DNA PCR, and HSV antigen detection are available methods for diagnosis, as reported by the CDC 3
- PCR is the most sensitive method for diagnosis, though not widely available, as noted by the CDC 3