Epstein-Barr Virus Manifestations

Epstein-Barr Virus Manifestations - Viral Villain's Skin Game

⭐ EBV is a ubiquitous herpesvirus (HHV-4) primarily targeting B-lymphocytes and epithelial cells, leading to diverse skin manifestations through direct infection or immune responses.

• Infectious Mononucleosis (IM) Exanthem:
  • Morbilliform rash, often after ampicillin/amoxicillin (📌 "Ampicillin rash").
  • Palatal petechiae.
  • Periorbital edema (Hoagland's sign).
• Gianotti-Crosti Syndrome (Papular Acrodermatitis of Childhood):
  • Symmetrical, monomorphic, papular/papulovesicular eruption on face, buttocks, extremities.
• Oral Hairy Leukoplakia (OHL):
  • White, corrugated, non-removable plaques on lateral tongue; common in HIV/immunosuppression.
• Other Associations:
  • Erythema multiforme.
  • Urticaria, vasculitis.
  • Lymphoproliferative disorders.

Epstein-Barr Virus Manifestations - Mono's Tell-Tale Spots

• Infectious Mononucleosis (IM) Exanthem:
  • Morbilliform (maculopapular) rash; most common. Also scarlatiniform, urticarial.
  • Appears 4-6 days post-fever; trunk & extremities.
• Ampicillin/Amoxicillin-Induced Rash:
  • Develops in IM patients given these antibiotics.
  • Bright, pruritic, maculopapular; 5-9 days post-drug.

  ⭐ The ampicillin/amoxicillin-induced rash in Infectious Mononucleosis occurs in >90% of treated patients and is typically a non-allergic, delayed-type hypersensitivity reaction.

• Other Key Manifestations:
  • Palatal petechiae (Forchheimer spots): on soft palate.
  • Periorbital edema (Hoagland sign).
  • Gianotti-Crosti syndrome (papular acrodermatitis of childhood).
  • Oral Hairy Leukoplakia (white lesions, lateral tongue; esp. HIV/immunocompromised).

Epstein-Barr Virus Manifestations - EBV's Oddball Outbreaks

• Gianotti-Crosti Syndrome (Papular Acrodermatitis of Childhood)
  • Symmetric, monomorphic, erythematous papules/papulovesicles.
  • Distribution: Face, buttocks, extensor surfaces of limbs.
  • Spares trunk; usually non-pruritic.
  • Self-limiting (weeks to months); typically children < 4 years.
  • Associated with EBV (most common in some regions), Hepatitis B, Coxsackievirus.
• Oral Hairy Leukoplakia (OHL)
  • White, corrugated or "hairy", non-removable plaques.
  • Location: Predominantly lateral borders of the tongue.
  • Caused by lytic EBV replication in epithelial cells.
  • Not considered premalignant.

  ⭐ Oral Hairy Leukoplakia, presenting as white, corrugated, non-removable plaques on the lateral tongue, is a strong indicator of HIV infection and significant immunosuppression.

• Other Rare EBV Dermatoses
  • Hydroa Vacciniforme-like Lymphoproliferative Disorder (HV-LPD): Photosensitive, recurrent vesicular/necrotic lesions; risk of systemic lymphoma.
  • Extranodal NK/T-cell lymphoma, nasal type: Aggressive, destructive midfacial lesions.

Epstein-Barr Virus Manifestations - EBV's Sinister Side

• Primarily in immunocompromised individuals; can drive oncogenesis.
• Oral Hairy Leukoplakia (OHL):
  • White, corrugated plaques, lateral tongue; not premalignant.
  • Marker of immunosuppression (e.g., HIV).
• Lymphoproliferative Disorders:
  • E.g., Post-Transplant Lymphoproliferative Disorder (PTLD).
  • Increased risk with potent immunosuppression.
• Nasal type NK/T-cell Lymphoma:
  • Aggressive, destructive midfacial lesions; poor prognosis.
• Hydroa Vacciniforme-like Lymphoproliferative Disorder (HV-LPD):
  • Sun-induced vesiculopapules, scarring; risk of systemic lymphoma.

⭐ EBV-positive mucocutaneous ulcer (EBVMCU) typically occurs in iatrogenically immunosuppressed or elderly patients and often has a self-limited or indolent course despite worrisome histology.

High‑Yield Points - ⚡ Biggest Takeaways

• Infectious Mononucleosis: Often presents with a morbilliform rash, especially after ampicillin/amoxicillin.
• Gianotti-Crosti Syndrome: EBV-associated symmetric papules on face, buttocks, and extremities in children.
• Oral Hairy Leukoplakia (OHL): White, corrugated, non-removable plaques on lateral tongue in immunocompromised (e.g., HIV).
• EBV is a known trigger for Erythema Multiforme.
• Hydroa Vacciniforme-like LPD: Rare, photosensitive EBV+ T/NK-cell disorder; vesicles, crusts, varioliform scars.
• Nasal type NK/T-cell lymphoma: Aggressive, EBV-linked, causes midfacial destructive lesions.