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Hand, foot, and mouth disease - Oral Mucosal Lesion
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Hand, foot, and mouth disease - Oral Mucosal Lesion

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Contributors: Gabriela Ulloa, Loren Krueger MD, Susan Burgin MD
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Synopsis

Hand-foot-and-mouth disease (HFMD) is an acute, self-limited viral illness characterized by an oral enanthem with accompanying macular, papular, or vesicular rash, notably on the hands, feet, buttocks, genitalia, and thighs. This typically lasts approximately 7-10 days. HFMD is predominantly caused by Coxsackievirus and other Enteroviruses.

HFMD is highly contagious and commonly transmitted in day care centers, schools, summer camps, and hospitals. Transmission of HFMD occurs via the fecal-oral route and through secretions, including secretions of vesicular fluid and nasal / oral fluid. Following infection, individuals can shed the virus via gastrointestinal passage for 4-6 weeks or via the upper respiratory tract for 3 weeks. Outbreaks usually occur from June to October. The incubation period for the virus is approximately 3-6 days.

HFMD primarily affects children, but adults can also develop the disease. Prodromal symptoms may include fever, abdominal pain, fussiness, emesis, and diarrhea. The typical course of infection starts with a mild fever, sore throat and mouth, cough, headache, malaise, diarrhea / vomiting, and occasional arthralgias. One to two days after the start of systemic symptoms, small oral macules can develop into vesicles and ultimately ulcerate. Lesions then develop on the hands, feet, and groin and can eventually become more widespread. Patients may have associated submandibular and cervical lymphadenopathy.

Coxsackie A6 may cause atypical HFMD where more extensive vesicle formation, including on the forearms and in the perioral area, is seen.

HFMD from Enterovirus A71 can result in uncommon, severe sequelae, including encephalitis, interstitial pneumonia, flaccid paralysis, myocarditis, meningoencephalitis, and spontaneous abortion. Complications are more severe under the age of 1 or with EA71 infection.

Eczema coxsackium refers to the spread of a Coxsackie viral exanthem in an underlying rash, most commonly atopic dermatitis. Widespread vesicles may be seen more frequently in this setting.

Codes

ICD10CM:
B08.4  – Enteroviral vesicular stomatitis with exanthem

SNOMEDCT:
266108008 – Hand foot and mouth disease

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

For oral lesions, consider:
  • Primary herpes gingivostomatitis – 2-4 mm vesicles, erosions, or ulcers are scattered broadly over the area of primary infection or they may coalesce. Cutaneous findings are absent.
  • Herpangina – Almost identical to HMFD in systemic presentation with a flu-like illness and mouth ulcers, but herpangina does not exhibit vesicles on the palms, soles, digits, and other skin sites.
  • Aphthous ulcers – Painful, shallow ulcers on a grayish base without vesicle formation.
  • Streptococcal throat infection
  • Oral candidiasis

Best Tests

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Management Pearls

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Therapy

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References

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Last Reviewed: 01/18/2018
Last Updated: 01/18/2018
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Hand, foot, and mouth disease - Oral Mucosal Lesion
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Hand, foot, and mouth disease (Most Common Symptoms) : Headache, Oral mucosa, Oral vesicles, Tiny vesicle, Anorexia, Pharyngitis, Feet or toes, Poor feeding
Clinical image of Hand, foot, and mouth disease
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