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OverviewAetiologyPathophysiologyClinical features and red flagsInvestigationsDifferential diagnosisManagementComplicationsMonitoring and follow-upSpecial situationsCommon pitfallsQuestionsSources
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Educational draft · awaiting clinical reviewThe full textbook explains uncertainty but does not replace live national or local guidance, specialist advice, or current prescribing information.

Lymphoedema

Cardiology · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
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Time-critical presentation

Rapid painful swelling, erythema with systemic illness, hypotension/confusion, new breathlessness/chest pain or acute unilateral swelling needs urgent assessment for cellulitis/sepsis, DVT or PE rather than routine lymphoedema treatment.

Overview

Diagnose chronic lymphatic swelling, exclude dangerous mimics and use decongestive therapy, skin care and cellulitis prevention safely.

Primary lymphoedema reflects developmental lymphatic dysfunction and may present at any age. Secondary disease is more common and follows lymph-node surgery/radiotherapy, malignancy, recurrent infection, trauma or severe obesity; chronic venous oedema can also overload and damage lymphatics.

Diagnosis is usually clinical after excluding systemic and vascular causes. The distribution (including foot/hand or genital involvement), skin texture, pitting, Stemmer sign, operative/cancer history and time course are more useful than one circumference measurement.

Treatment controls rather than cures swelling. Compression must be individualised after arterial assessment where relevant, and manual drainage should be delivered/taught by trained lymphoedema clinicians—particularly when cancer, heart failure or acute infection complicates the picture.

Key points

  • Lymphoedema is protein-rich interstitial swelling from impaired lymph transport; it may be primary or secondary to cancer treatment, nodal disease, infection, obesity, trauma or chronic venous disease.
  • Early swelling may pit and improve overnight; later fibrosis, skin thickening and papillomatosis make it firm and non-pitting.
  • A positive Stemmer sign supports lymphoedema, but a negative sign does not exclude it.
  • New unilateral swelling still requires DVT, malignancy/recurrence and infection assessment before being labelled lymphoedema.
  • NHS decongestive lymphatic therapy has four components: compression, skin care, exercise and specialised manual lymphatic drainage.
  • After volume reduction, maintenance depends on correctly fitted garments, self-massage when taught, exercise, weight management and meticulous skin care.
  • Diuretics are not routine treatment for isolated lymphoedema because they remove water without correcting lymphatic protein clearance; use only for a separate indication.
  • Cellulitis can worsen lymphatic damage: treat promptly, pause painful compression briefly, then restart as soon as tolerable and address portals such as tinea or fissures.

Aetiology

01

Primary lymphatic dysfunction

Developmental undergrowth or abnormal function of lymphatic vessels and valves reduces transport capacity. It may present at any age, sometimes after a physiological stress exposes limited lymphatic reserve.

02

Cancer and its treatment

Lymph-node surgery, radiotherapy, tumour recurrence or nodal obstruction can interrupt regional drainage. The distribution usually reflects the treated or obstructed lymphatic territory and may emerge months or years later.

03

Infection, inflammation or trauma

Recurrent cellulitis, tissue injury and scarring can damage lymphatic channels. Each inflammatory episode may further reduce drainage, creating a cycle of increasing swelling and infection susceptibility.

04

Venous overload and severe obesity

Chronic venous hypertension or marked obesity increases interstitial fluid formation beyond lymphatic capacity. Prolonged overload can eventually injure lymphatics, producing combined venous and lymphatic oedema.

Pathophysiology

  1. 1
    Impaired lymph transport

    Reduced lymphatic capacity prevents normal return of interstitial fluid, proteins and immune cells to the circulation. Protein-rich fluid therefore accumulates within the affected tissues.

  2. 2
    Persistent tissue inflammation

    Protein-rich fluid, impaired immune trafficking and lymphatic dysfunction promote chronic inflammation, adipose deposition and tissue remodelling. Early soft pitting swelling can consequently become less reversible.

  3. 3
    Fibrosis and skin change

    Continuing inflammation stimulates collagen deposition and dermal thickening. The limb may become firm and non-pitting, with deepened folds, papillomatosis and impaired joint or soft-tissue movement.

  4. 4
    Infection feedback loop

    Oedematous skin may become thickened or fissured, weakening the barrier while local immune clearance is impaired. Cellulitis can then cause further lymphatic injury and accelerate chronic swelling.

Clinical features and red flags

Early lymphoedema

Asymmetric pitting swelling with heaviness/tightness, often involving the dorsum of the foot or hand; may lessen overnight.

Established lymphoedema

Firm non-pitting tissue, thickened skin, squared toes, deepened folds, papillomatosis and reduced limb mobility.

Positive Stemmer sign

Inability to pinch a skin fold at the base of the second toe/finger supports dermal thickening; sensitivity is incomplete.

CellulitisRed flag

New warmth, tenderness, erythema/blotchy rash, rapid swelling, fever or flu-like symptoms; systemic toxicity requires emergency care.

Lipoedema contrast

Usually bilateral symmetrical painful fat enlargement that spares feet, bruises easily and has a negative Stemmer sign; secondary lymphoedema can coexist.

Investigations

  1. 01
    Structured limb examination and volume/circumference measurementsFirst step
    Why
    Confirm distribution, stage severity and provide a reproducible baseline.
    Interpretation and limitations
    Measure at fixed landmarks or use validated perometry/volume methods; change over time is more useful than an isolated value.
  2. 02
    DVT Wells/D-dimer/ultrasound pathway when acute unilateral swelling
    Why
    Exclude venous thrombosis before attributing acute swelling to lymphoedema.
    Interpretation and limitations
    Follow NICE NG158 timing; chronic baseline swelling does not prevent superimposed DVT.
  3. 03
    ABPI/toe pressure before lower-limb compression when PAD risk exists
    Why
    Ensure compression is safe and select intensity.
    Interpretation and limitations
    Low, high or unreliable ABPI requires vascular/tissue-viability input rather than automatic standard garments.
  4. 04
    Targeted U&E, LFT, albumin, urinalysis, BNP/echo assessment
    Why
    Investigate bilateral/generalised oedema or systemic clues.
    Interpretation and limitations
    Use selectively to identify renal, hepatic, protein-losing or cardiac causes; normal tests do not diagnose lymphoedema.

Differential diagnosis

01

Deep-vein thrombosis

DVT more often causes sudden unilateral swelling, pain and venous distension. Acute onset or thromboembolic risk requires the formal DVT pathway rather than attribution to established lymphoedema.

02

Chronic venous oedema

Venous disease often worsens with dependency and accompanies varicosities, pigmentation or venous ulceration. Lymphoedema more characteristically involves the dorsal foot, digits and progressive skin thickening.

03

Lipoedema

Lipoedema usually produces bilateral, symmetrical, tender fat enlargement with easy bruising and sparing of the feet. A negative Stemmer sign supports it but does not exclude coexisting lymphoedema.

04

Systemic fluid retention

Heart, renal, hepatic or protein-losing disease more often causes bilateral or generalised oedema with systemic clinical or laboratory clues. These conditions can coexist with local lymphatic failure.

Additional chapter-specific clues

DVT or recurrent malignancy mimicRed flag

Sudden unilateral swelling, venous distension, pain, new nodes, weight loss or progression after cancer treatment requires urgent vascular/oncology reassessment.

Management

01new swellingFirst assessmentFirst stepPersistent limb or midline swelling suggestive of lymphatic failure.+
  1. 1First: establish onset, cancer/nodal treatment, infection, travel, drugs, venous history and cardiac/renal/liver symptoms; examine both limbs and nodes.
  2. 2Next: urgently exclude DVT, cellulitis and malignant/central obstruction when clinical features suggest them.
  3. 3Next: document limb measurements and skin condition; assess arterial supply before substantial lower-limb compression when indicated.
  4. 4EscalationEscalation: refer to a specialist lymphoedema service for diagnosis, garment prescription and a personalised decongestive plan.
02decongestionIntensive decongestive therapySignificant swelling, shape distortion, tissue change or symptoms needing active volume reduction.+

Complications

01

Recurrent cellulitis and sepsis

Skin breaks and impaired local immune clearance facilitate bacterial infection. Cellulitis can spread systemically and also damages lymphatics further, increasing the likelihood of another episode.

02

Progressive fibrosis and deformity

Chronic inflammation and collagen deposition make tissue increasingly firm, heavy and misshapen. Garments become harder to fit, while mobility, dexterity and daily activities may deteriorate.

03

Lymph leakage and chronic wounds

High tissue pressure can drive lymph through fragile skin and delay wound healing. Persistent leakage macerates surrounding tissue and creates additional portals for infection.

04

Pain and functional limitation

Limb weight, tight tissues and recurrent inflammation can restrict joint movement and exercise. Reduced activity weakens the muscle pump, which may further impair fluid clearance.

Monitoring and follow-up

  • Repeat circumference/volume at fixed landmarks and review symptoms, function and garment fit.
  • Inspect interdigital spaces, nails, folds and wounds for tinea, fissures, dermatitis and lymph leakage.
  • Monitor compression tolerance, distal colour/warmth/sensation and arterial symptoms after any garment change.
  • Record cellulitis episodes, organism/portal when known, antibiotic response and 48-hour review; recurrent episodes trigger prophylaxis discussion.
  • Reassess for cancer recurrence, venous obstruction or systemic oedema when swelling changes unexpectedly.

Special situations

Pitting evolves

Early lymphoedema may pit; late fibrosis may not, so neither feature alone makes or excludes the diagnosis.

Feet and hands are clues

Dorsal foot/hand and digit involvement favours lymphoedema, while classic lipoedema spares the feet.

Compression and exercise work together

The external counter-pressure lets muscle contraction propel fluid; an inactive compressed limb is less effective.

Diuretics can mislead

Temporary water loss may leave protein-rich tissue disease unchanged and expose the patient to electrolyte/renal harm.

Cellulitis courses differ

BLS lymphoedema-specific guidance advises 14 days, longer than generic uncomplicated cellulitis guidance because early recurrence is a particular concern.

Common pitfalls

  1. 01

    Calling all chronic leg swelling lymphoedema without excluding venous, cardiac, renal, drug and malignant causes.

  2. 02

    Using a negative Stemmer sign to rule out early disease.

  3. 03

    Prescribing loop diuretics routinely for isolated lymphoedema.

  4. 04

    Applying standard strong compression without arterial assessment in a limb with PAD risk or ischaemic symptoms.

  5. 05

    Leaving compression off for a week after cellulitis when it could be restarted safely once pain settles.

Practice

Two practice questions

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Question 1 of 2
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CardiologyOriginal SBA

Core therapy

A patient with uncomplicated chronic limb lymphoedema is referred for conservative treatment. Which combination best describes NHS decongestive lymphatic therapy?

Choose one answer, then submit
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Sources and review status5 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • NHS: Lymphoedema treatmentDecongestive lymphatic therapy and maintenance.
  • British Lymphology Society: Cellulitis in lymphoedema (2025)Lymphoedema-specific antibiotic choice, dose, duration and recurrence prevention.
  • NICE NG141: Cellulitis and erysipelasGeneric cellulitis severity, referral and antimicrobial safety context.
  • NICE NG158: Venous thromboembolic diseasesDVT exclusion for acute unilateral swelling.
  • NICE CKS: Compression stockingsArterial assessment and compression safety.

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateComplete draftClinical stateAwaiting reviewJurisdictionUnited Kingdom
05
Ultrasound/CT/MRI or lymphoscintigraphy in atypical cases
Why
Look for mass/recurrence, venous obstruction or demonstrate lymphatic dysfunction when diagnosis or surgery planning is uncertain.
Interpretation and limitations
Imaging is targeted; unexplained new adult-onset unilateral disease after cancer requires prompt exclusion of recurrence/obstruction.
1
First: daily skin hygiene/emollient care and treatment of entry lesions such as tinea, fissures or weeping wounds.
  • 2Next: specialist-applied multilayer compression or adjustable wraps combined with movement/exercise.
  • 3Next: add manual lymphatic drainage when indicated and teach simple self-drainage; individualise for comorbidity.
  • 4EscalationEscalation: review fit, pain, neurological or ischaemic symptoms immediately and modify/stop compression if arterial compromise is suspected.
    • 03maintenanceLong-term self-managementVolume reduced or stable chronic lymphoedema.+
    1. 1First: wear correctly fitted compression garments as prescribed and replace/re-measure when worn, loose or limb size changes.
    2. 2Next: continue skin care, exercise/calf or arm pump activity, weight management and taught self-massage.
    3. 3Next: recognise cellulitis early and seek prompt antibiotics; address recurrent portals and consider specialist prophylaxis after repeated episodes.
    4. 4EscalationEscalation: re-refer for rapid growth, loss of garment fit, recurrent cellulitis, wounds, pain or functional decline.
    04cellulitisCellulitis in lymphoedemaAcute warmth, pain, erythema and increased swelling with or without fever/systemic symptoms.+
    1. 1First: assess sepsis and mark/document the affected area; admit for hypotension, confusion, rapidly worsening disease, vomiting or other red flags.
    2. 2Next: for uncomplicated disease, start lymphoedema-specific oral antibiotic treatment promptly and review response at 48 hours.
    3. 3Next: rest/elevate initially; remove compression only if painful, then restart as soon as comfortably tolerated to avoid rebound swelling.
    4. 4EscalationEscalation: no improvement or deterioration at 48 hours needs hospital/microbiology review; repeated episodes need specialist risk-factor and prophylaxis assessment.
    Key medicines and prescribing safety3 treatments · regimens, roles and cautions+
    BLS 2025 first-choice treatment covering streptococci and staphylococci in lymphoedema-associated cellulitis.

    Flucloxacillin

    500 mg–1 g orally every 6 hours for 14 days for uncomplicated cellulitis in established lymphoedema.

    1 g four times daily is off-label; check true penicillin allergy and liver history. Deterioration at any time or no response by 48 hours needs escalation; generic NICE cellulitis courses are shorter, but BLS specifically advises 14 days in lymphoedema.

    BLS alternative for true penicillin allergy in lymphoedema-associated cellulitis.

    Clarithromycin

    500 mg orally twice daily for 14 days.

    Review QT prolongation and CYP3A interactions, especially statins; erythromycin is preferred if a macrolide is needed in pregnancy.

    Maintain the skin barrier and reduce fissures/entry sites for infection.

    Emollient

    Apply liberally at least once daily and after washing; quantity depends on limb area and product.

    Paraffin-containing products create a serious fire risk on fabrics; keep away from flames/smoking and wash clothing/bedding regularly.