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ContentsSynopsisCodesLook ForDiagnostic PearlsDifferential Diagnosis & PitfallsBest TestsManagement PearlsTherapyReferencesView all Images (12)
Potentially life-threatening emergency
Toxic shock syndrome in Child
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Other Resources UpToDate PubMed
Potentially life-threatening emergency

Toxic shock syndrome in Child

Print Images (12)
Contributors: Sylvia Yeh MD, Art Papier MD, Noah Craft MD, PhD
Other Resources UpToDate PubMed

Synopsis

Toxic shock syndrome (TSS) is a severe exotoxin-mediated bacterial infection that is characterized by high fevers, headache, pharyngitis, vomiting, diarrhea, and hypotension. Two subtypes of TSS exist, based on the bacterial etiology: Staphylococcus aureus and group A streptococci. Significantly, the severity of TSS can range from mild disease to rapid progression to shock and end organ failure. The dermatologic manifestations of TSS include the following:
  • Erythema of the palms and soles that desquamates 1-3 weeks after the initial onset
  • Diffuse scarlatiniform exanthem that begins on the trunk and spreads toward the extremities
  • Erythema of the mucous membranes (strawberry tongue and conjunctival hyperemia)
TSS was identified in and most commonly affected menstruating young white females using tampons in the 1980s. Current TSS cases are seen in post-surgical interventions in men, women, and children, as well as in other settings, in addition to cases of menstrual TSS, which have declined with increased public education on tampon usage and TSS. One study in Japanese patients found the highest TSS incidence to occur among children with burns, as Staphylococcus colonization is high in this subgroup and antibody titers are not yet sufficient to protect children from the exotoxins causing TSS.

Staphylococcal TSS is caused by S. aureus strains that can produce the toxic shock syndrome toxin-1 (TSST-1). TSST-1 is believed to cause disease via direct effects on end organs, impairing clearance of gut flora derived endotoxins, with TSST-1 acting as a superantigen leading to massive nonspecific activation of T-cells and subsequent inflammation and vascular leakage. In this form of TSS, risk factors include lack of an antibody to TSST-1, surgical packing, abscesses, surgical mesh, and tampon use. A late 1980s study showed a lower rate of tampon usage among African American and Mexican American women compared to white women, and while this may help explain the lower incidence of TSS in African American women, the authors did not believe the findings were sufficient to explain the discrepancy entirely. They hypothesized that perhaps the erythema of TSS is more difficult to see on darker skin phototypes, thus resulting in clinicians failing to recognize or report TSS because they failed to recognize one of the criteria for diagnosis.

Streptococcal TSS is also caused by exotoxins that cause massive stimulation of T-cells via a superantigen mechanism. Clinically, the most common presenting symptom is severe pain in an extremity with or without underlying soft tissue infection. A prodrome of fever, diarrhea, and myalgias is often seen. The macular exanthem seen in staphylococcal TSS is much less commonly found in streptococcal TSS. Approximately 48-72 hours after the initial onset, shock and multiorgan failure follow. In this form of TSS, risk factors include varicella infection, bites, and lacerations.

Epidemiological studies from 2000-2004 in the United States show the incidence of invasive group A Streptococcus infections, such as streptococcal TSS, are higher among African Americans than other groups. The case fatality rate, however, was not different between groups.

Interestingly, there is an emerging pathogen, Streptococcus suis, which can be transmitted from pigs to humans and has been responsible for several large outbreaks of disease, including toxic shock syndrome, in Asia, specifically Thailand and China. The consumption of raw or undercooked pork is the number one risk factor. In one Thai study, 23% of patients with positive cultures developed TSS, and the mortality rate from infection with certain serotypes of S. suis has proven to be exceptionally high. Thus, this new pathogen has been cause of great concern worldwide.

All forms of TSS can result in confusion and coma, renal impairment, liver impairment, adult respiratory distress syndrome, and disseminated intravascular coagulation. Supportive measures (eg, intravenous fluids, vasopressors) and appropriate antibiotics are the mainstays of treatment.

Pediatric Patient Considerations
Children are most susceptible to TSS between the ages of 6 months and 2 years old. Before 6 months, the mother's antibodies are protective, and after 2 years old, the child begins producing antibody titers in higher amounts. Beyond age 41, antibodies against TSST-1 are at their highest levels.

Closed environment (hospital, school, military, familial) outbreaks of TSS have occurred, and an outbreak of group A streptococcal TSS was reported in a daycare in Spain that led to one child's death and several hospitalizations.

TSS mortality rates are much lower in children than adults at 5%-10% and 3%-5% for streptococcal versus staphylococcal types, respectively.

Immunocompromised Patient Considerations
Although infections with S. aureus are common in human immunodeficiency virus (HIV)-infected people, the complication of TSS is rare. This is thought to be related to the immune deficits and T-helper cell dysfunction in HIV-infected people. However, in cases that have been reported, they tend to present with a recurrent and prolonged disease course.  Attributed to delayed antibody production against TSST-1 by HIV-infected individuals, a protracted disease course has been reported in HIV-infected teens, adults, and children.

Codes

ICD10CM:
A48.3 – Toxic shock syndrome

SNOMEDCT:
18504008 – Toxic shock syndrome

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Last Updated: 01/29/2018
Copyright © 2018 VisualDx®. All rights reserved.
Potentially life-threatening emergency
Toxic shock syndrome in Child
Print 12 Images
View all Images (12)
(with subscription)
Toxic shock syndrome : Diarrhea, Fever, Headache, ALT elevated, AST elevated, Creatinine elevated, Delirium, Edema, Erythroderma, Widespread, Myalgia, HR increased, BP decreased, Scarlatiniform rash
Clinical image of Toxic shock syndrome
Copyright © 2018 VisualDx®. All rights reserved.