Source / episode info
- **Episode:**627
- **Title:**DIP Ep 627: The Clutch Herpes Podcast (Step 1-3), Part B
- **Published:**2025-12-12
- Source:Episode page
One-liner
This episode provides a comprehensive review of major herpesviruses (HSV1/2, VZV, EBV, CMV, HHV6, HHV8), emphasizing differential diagnosis of CNS infections, specific clinical syndromes (e.g., Roséola, Mono-like syndrome), and critical management pearls for complications like post-traumatic neuropathy and congenital disease.
High-yield summary
- HSV Latency Sites: HSV1 typically latently resides in the trigeminal ganglion; HSV2 primarily latently resides in the sacral ganglion.
- CNS Infection Pattern: While both can cause encephalitis/meningitis, HSV1 tends to favor encephalitis (parenchyma involvement), whereas HSV2 tends to favor meningitis.
- VZV Vaccine Safety: The Varicella vaccine is a live attenuated product and must be contraindicated in immunocompromised patients (e.g., CD4 count < 200) and pregnant women.
- EBV/Mono Workup: Diagnosis relies on the heterophile antibody test (Monospot). Be aware that anterior cervical lymphadenopathy alone is not specific for infectious mononucleosis.
- CMV Neonatal Risk: Congenital CMV infection can present with sensorineural hearing loss, microcephaly, and periventricular calcifications in newborns.
- HHV6/Roséola: The classic presentation involves a high fever lasting several days, followed by the abrupt resolution of fever and then the appearance of a rash starting on the trunk and spreading peripherally.
Learning objectives
- Differentiate the clinical presentations and latency sites of major human herpesviruses (HSV1, HSV2, VZV).
- Recognize the classic signs and symptoms associated with specific viral syndromes (e.g., Roséola, Infectious Mono, Kaposi Sarcoma).
- Understand the diagnostic modalities for herpesvirus infections, emphasizing PCR over cytology/culture.
- Master the management principles of post-herpetic complications, particularly neuropathic pain.
- Identify congenital and opportunistic manifestations of CMV infection in immunocompromised hosts.