Red legs: Recognition, assessment and management in primary care

GP Dr Roger Henderson outlines the features and underlying causes of ‘red legs’ presentations, and describes how nurses in general practice and the community can support prompt and appropriate interventions

‘Red legs’ – where lower limbs become swollen and inflamed – are a common presentation in the community and general practice, as well as in acute settings. Underlying causes range from acute infection to chronic inflammatory or vascular disease.

Nurses frequently assess patients with swollen, warm, erythematous lower limbs, and one of the main clinical challenges here is determining whether the patient has cellulitis or a non-infective condition such as venous eczema or lymphoedema.¹ Misdiagnosis is relatively common and studies suggest that many patients treated for cellulitis actually have inflammatory conditions related to chronic venous disease.² This can lead to unnecessary antibiotics, avoidable hospital admissions and delays in appropriate treatment. Accurate assessment is therefore essential, not only for patient outcomes but also for antimicrobial stewardship.³

This module provides an evidence-based overview of red legs and the main underlying conditions, including the clinical presentation and key principles of diagnosis and management, drawing on current NICE guidance and best-practice recommendations.

Learning objectives

This module will support nurses to:

• Recognise the common causes of red legs, including cellulitis, venous eczema, chronic venous insufficiency, lymphoedema and deep vein thrombosis.
• Understand the key clinical differences between cellulitis and non-infective causes of lower limb redness.
• Refresh on the principles of a structured assessment of patients presenting with red legs.
• Identify red flag symptoms and signs that require urgent or specialist referral.
• Understand approaches to lower limb management, including skin care, oedema management, compression therapy and antimicrobial stewardship.

Author: Dr Roger Henderson is a GP in Scotland

Date published: 26.06.2026