Hand, Foot, and Mouth Disease (HFMD)
Enteroviral Mucocutaneous Vesicular Eruption
Primary risk age: Infants and children under 5 years (Common in daycare and school settings)
- Urgency
- Moderate
- Typical age
- Infants and children under 5 years (Common in daycare and school settings)
- Body system
- Dermatological System
Typical course: Symptoms typically resolve spontaneously within 7 to 10 days.
Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13
1. Summary & Pathophysiology
Enteroviral Mucocutaneous Vesicular Eruption
Pathophysiology (Development Path)
The virus is transmitted via the fecal-oral route or respiratory droplets. It replicates in the lymphoid tissue of the pharynx and distal ileum, enters the bloodstream, and targets the skin and mucous membranes, causing localized cell damage and vesicle formation.
Primary Causes & Etiology
Coxsackievirus A16 and Enterovirus 71 are the primary viral causes.
2. Symptom Continuum
- Early Onset Signs
Low-grade fever (38°C), sore throat, decreased appetite, and malaise lasting 1 to 2 days.
- Progressive Phase
Painful, red macules or small blisters (vesicles) appearing on the tongue, gums, and inner cheeks (herpangina), which quickly turn into shallow, painful ulcers. This is accompanied by a non-pruritic rash on the palms of the hands and soles of the feet.
- Severe Indicators
High fever, vomiting, dehydration due to painful mouth ulcers, and neurological complications (aseptic meningitis or encephalitis, specifically associated with Enterovirus 71).
3. Clinical Verification
Clinical diagnosis based on the unique distribution of painful mouth ulcers and blisters on the hands and feet. Stool or throat swabs can confirm enterovirus via PCR.
4. Care & Elements Plan
Primary Care Treatment Plan
Supportive care. Provide effective pain management for mouth ulcers and maintain hydration. Antivirals are not indicated.
Home Support Elements
Offer cold, soft foods (ice cream, yogurt, cold milk) and avoid acidic, salty, or spicy foods that can sting the mouth ulcers. Monitor fluid intake and wet diapers carefully.
Generic Active Ingredients (No Brands)
- Acetaminophen or Ibuprofen (generic active ingredients for pain relief and fever management). Topical anesthetics are avoided in young children due to dosing risks.
Lists active elements only. Never administer self-designed therapies.
5. Doctor Critical Lines
Critical Thresholds: When to See a Doctor
Seek medical care if the child refuses fluids, shows signs of dehydration (no wet diapers for 6-8 hours), develops a high fever, or exhibits lethargy or irritability.
6. Vaccine & Prevention
Routine Prophylaxis (Prevention)
Strict hand washing, especially after diaper changes. Disinfect shared toys and surfaces. Exclude infected children from school or daycare until the fever resolves and the blisters dry.
Immunization Context
An Enterovirus 71 vaccine is available in some countries (e.g., China), but is not part of the standard US/European routine schedule.
7. Timelines & Outlook
Active Timeline
Symptoms typically resolve spontaneously within 7 to 10 days.
Expected Prognosis
Excellent. The disease is self-limiting and resolves completely without scarring.
Potential Untreated Complications
Dehydration (most common), aseptic meningitis, nail shedding (onychomadesis) weeks after recovery, and myocarditis (rare).
More in Bacterial Pyodermas & Super-infections
Mild Impetigo Contagiosa
Superficial Bacterial Epidermal Infection
Preschool and school-aged children (2 to 5 years; highly contagious)
Mild Scabies
Intensely itchy skin infestation by the human scabies mite.
All ages; in infants often involves palms, soles, and the scalp.
Mild Ringworm (Tinea)
Common contagious fungal skin infection (not a worm).
All ages; scalp ringworm is most common in school-age children.