What are the key clinical features to recognize Toxic Shock Syndrome (TSS) in a primary care setting?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 22 August 2025Updated: 22 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

To recognise Toxic Shock Syndrome (TSS) in a primary care setting, it is crucial to identify a combination of key clinical features that indicate a severe systemic illness with rapid onset . A hallmark of TSS is the presence of shock, which can be a primary manifestation, alongside other signs of severe infection .

Key features often include a sudden high temperature or fever ,. Patients typically develop a diffuse erythematous rash, which may appear similar to sunburn . Hypotension, indicating shock, is a critical diagnostic criterion and may present with signs of poor perfusion such as cold extremities, prolonged capillary refill time, or reduced urine output .

Beyond these, TSS can involve multiple organ systems, leading to symptoms such as vomiting, diarrhoea, muscle pain, and altered mental status . Recognizing these signs of severe infection and potential organ dysfunction is vital, as suspected TSS warrants urgent hospital admission for further management .

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