Toe Pain
Toe pain is discomfort in one or more toes that may arise from trauma, gout, bunions, hammertoe deformities, ingrown toenails, infections, or peripheral neuropathy.
Murtagh Diagnostic Strategy
| Category | Diagnosis | Key Discriminator | Cantonese Question / Finding | Probability |
|---|---|---|---|---|
| Probability Diagnosis | Ingrown toenail (onychocryptosis) | Lateral nail fold tenderness, redness, ± pus | 「趾甲邊有冇紅腫痛？有冇流膿？」 | ~25% |
| Gout (acute gouty arthritis) | Acute onset, exquisitely tender, red, swollen 1st MTPJ (podagra); ↑urate; M > F; alcohol/seafood trigger | 「隻大腳趾係咪突然間好痛、又紅又腫，掂都唔俾掂？」(Is your big toe suddenly very painful, red, swollen, can't even touch it?) | ~20% | |
| Hallux valgus (bunion) [3] | Gradual medial 1st MTP prominence, deviation of great toe laterally, pain with tight shoes | 「隻大腳趾有冇向外歪？著鞋嗰陣痛唔痛？」(Does your big toe angle outward? Pain with shoes?) | ~10% | |
| Serious Not To Miss | Critical limb ischaemia (PAD) [1] | Rest pain (nocturnal), absent pulses, pallor, ABI < 0.4 | 「瞓覺嗰陣腳趾痛唔痛？腳有冇凍同變白？」 | ~2% |
| Septic arthritis | Fever + hot swollen joint + ↑WCC/CRP; risk if DM, immunosuppressed | 「有冇發燒？關節有冇好紅好熱？」Red flag → urgent aspiration | ~1% | |
| Osteomyelitis | Non-healing wound + probe-to-bone, DM foot | 「有冇傷口好耐都唔埋口？」 | < 1% | |
| Pitfalls | Stress/march fracture of toe | Recent ↑activity, localised bony tenderness, XR may be initially normal | 「近排有冇行好多路或者做多咗運動？」 | ~5% |
| Morton's neuroma [4] | Pain in 3rd/4th intermetatarsal space, worse with tight shoes, Mulder's click | 「係唔係腳趾之間痛？著窄鞋會唔會差啲？」 | ~3% | |
| Psoriatic arthritis (dactylitis – sausage toe) | Sausage digit, nail pitting, skin plaques | 「隻趾有冇成條腫晒？皮膚有冇紅斑？」 | ~1% | |
| Masquerades | Diabetic neuropathy / diabetic foot [2] | Burning/numbness, ↓monofilament sensation, foot ulcer, ↓pulses | 「對腳有冇痺？有冇糖尿？」 | ~5% |
| Drug-induced (diuretics → gout) | Temporal relationship with medication start | 「最近有冇開始食新藥？」 | ~3% | |
| Trying to Tell Me Something? | Fear of serious disease (e.g., cancer, amputation); work stress; lifestyle limitation | Excessive worry disproportionate to symptom | 「你最擔心會唔會係咩嚴重嘢？」 | ~10% |
| Time | Task | Cantonese Key Phrases | Why It Scores Marks |
|---|---|---|---|
| 0:00–0:30 | Friendly opening, intro, set agenda | 「你好呀，我係X醫生，今日想同你傾下你隻腳趾嘅問題，可以嗎？」("Hi, I'm Dr X, I'd like to chat about your toe problem today, OK?") | Rapport, consent, interpersonal marks |
| 0:30–1:30 | HPI: SOCRATES for toe pain | 「隻腳趾痛咗幾耐呀？邊隻趾呀？係點痛法？有冇紅腫熱？之前有冇撞親？」 | Captures chief complaint, onset, character, severity, associated features |
| 1:30–2:30 | Red flags + targeted Hx: gout RF, infection, vascular, DM | 「你有冇食嗰啲海鮮、飲酒？有冇糖尿病高血壓？有冇食薄血藥或者痛風藥？」 | Differentiates gout vs septic arthritis vs PAD vs fracture |
| 2:30–3:30 | PMH, Drug Hx, Allergy, FHx, Social Hx | 「你有冇長期病患？食緊咩藥？有冇藥物敏感？屋企人有冇痛風？你做咩工作？行路多唔多？」 | Completeness of history; occupation & functional impact |
| 3:30–4:30 | ICE: Ideas, Concerns, Expectations | 「你自己覺得點解會痛？最擔心啲咩？今日嚟最希望我幫到你咩？」 | Direct CRF marks; uncovers hidden agenda |
| 4:30–5:15 | Summarise, check understanding | 「等我同你總結下：你隻大腳趾痛咗兩日，又紅又腫，之前冇撞過…啱唔啱？」 | Shows active listening; interpersonal marks |
| 5:15–6:00 | Signpost plan, safety-net, close | 「我想幫你驗下血同照下X光，如果痛到好犀利或者發燒，記得即刻返嚟睇。多謝你今日嚟！」 | Safe closure; management/safety-net line |
Uncovering the hidden agenda: The patient may present with "toe pain" but the real concern could be fear of gout running in the family, worry about diabetes/amputation, or a work/lifestyle impact (e.g., unable to exercise). Always ask: 「你最擔心啲咩？」and 「點解揀今日嚟睇呢？」("Why today?")
| Domain | English Question | Cantonese Question | Why It Matters | If Positive Think Of |
|---|---|---|---|---|
| Site | Which toe? Which joint exactly? | 「痛邊隻腳趾呀？係趾頭定係趾骱？」 | 1st MTP = classic gout; lesser toes = other DDx | Gout (1st MTPJ), OA, hallux rigidus |
| Onset | When did it start? Sudden or gradual? | 「幾時開始痛？係突然間定係慢慢嚟？」 | Acute = gout/septic/fracture; chronic = OA/hallux rigidus | Acute: gout, septic arthritis, fracture |
| Character | What type of pain? Throbbing? Burning? | 「痛嘅感覺係點？脹痛？刺痛？灼熱？」 | Throbbing/excruciating = gout; burning = neuropathy | Gout, diabetic neuropathy |
| Severity | Pain score 0–10? Can you walk? | 「十分滿分嘅話痛幾多分？行唔行到路？」 | Functional impact; severity for CRF | Severe = gout flare, septic arthritis |
| Red/swollen/hot | Is the toe red, swollen, warm? | 「隻趾有冇紅腫熱？」 | Inflammatory vs mechanical | Gout, septic arthritis, cellulitis |
| Fever | Any fever/chills? | 「有冇發燒或者打冷震？」 | Red flag for septic arthritis | Septic arthritis → urgent referral |
| Trauma | Any injury or stubbing? | 「有冇撞親或者踢親？」 | Fracture, subungual haematoma | Toe fracture, turf toe |
| Dietary triggers | Alcohol, seafood, organ meats recently? | 「近排有冇飲酒、食海鮮或者內臟？」 | Classic gout precipitants | Gout |
| Medications | Diuretics? Aspirin? Allopurinol? | 「有冇食去水丸、亞士匹靈或者痛風藥？」 | Thiazides/loop diuretics raise urate | Drug-induced hyperuricaemia |
| PMH | DM? CKD? Hypertension? Previous gout? | 「你有冇糖尿、腎病、高血壓？之前有冇試過痛風？」 | DM → neuropathy/PAD; CKD → gout; recurrent gout | Diabetic foot, CKD-related gout |
| Vascular symptoms | Cold feet? Colour change? Claudication? | 「對腳有冇凍？有冇變色？行路行耐會唔會痛？」 | PAD / critical limb ischaemia [1] | PAD, Buerger's disease |
| Neuropathy | Numbness? Tingling? | 「有冇痺或者蟻咬嘅感覺？」 | Diabetic peripheral neuropathy | DM neuropathy → ulcer risk [2] |
| Skin changes | Any wound, discharge, nail changes? | 「有冇傷口流膿？指甲有冇變色變厚？」 | Infection, fungal nail, ingrown toenail | Cellulitis, paronychia, onychomycosis |
| FHx | Family history of gout or arthritis? | 「屋企人有冇痛風或者關節炎？」 | Genetic predisposition | Gout, RA |
| Social/Occupation | Job? Standing/walking? Footwear? | 「你做咩工作？著咩鞋？」 | Occupational impact, footwear-related pathology | Hallux valgus, Morton's neuroma |
| Functional impact | Impact on daily life? Sleep? | 「影唔影響你返工同瞓覺？」 | Biopsychosocial problem | Psychosocial distress |
| ICE | What do you think it is? Worries? Expectations? | 「你覺得係咩事？最擔心啲咩？今日想我點幫你？」 | Direct CRF marks | Hidden agenda |
Case Report Form Answer Builder
- CC: Toe pain × [duration], e.g., "Acute onset right big toe pain for 2 days"
- HPI high-yield points: Site (which toe, which joint), onset (sudden vs gradual), character, severity, swelling/redness/warmth, aggravating factors (walking, shoes, diet, alcohol), relieving factors, prior episodes, associated fever, trauma, skin/nail changes
- Relevant negatives: No fever, no trauma, no numbness, no wound
- Likely RFC examples: "To find out the cause of toe pain," "Worried about gout," "Unable to walk to work," "Fear of diabetes-related amputation"
- Phrasing: Choose the single most important driving reason. Often it is the patient's concern, not just the symptom itself, e.g., "Patient is concerned about recurrent gout attacks affecting work"
| Example Wording | |
|---|---|
| Idea | "Patient thinks it may be gout because his father had gout" |
| Concern | "Worried it may lead to kidney problems or need long-term medication" |
| Expectation | "Wants pain relief and to know if dietary changes can prevent recurrence" |
- Gout (acute gouty arthritis) if: acute onset, 1st MTPJ (podagra), red/hot/swollen, male, dietary triggers, ± history of hyperuricaemia
- Minimum supporting evidence: Acute monoarthritis of 1st MTPJ + inflammatory signs + risk factors (male, alcohol, seafood, diuretics, FHx, CKD)
| DDx | Key Discriminator |
|---|---|
| Septic arthritis | Fever, systemically unwell, risk factors (DM, immunocompromised); needs urgent joint aspiration |
| Cellulitis / paronychia | Spreading erythema beyond joint, skin break/ingrown nail as portal of entry |
| Traumatic fracture / stress fracture | History of trauma or overuse, focal bony tenderness, XR findings |
| Domain | Problem |
|---|---|
| Biological | Acute gouty arthritis causing significant pain and immobility |
| Psychological | Anxiety about recurrence / fear of chronic disease or complications |
| Social/Functional | Unable to walk comfortably → impact on work, exercise, ADLs |
| Diagnosis/DDx | Best Supporting Physical Sign | How to Elicit It | Why It Supports This Diagnosis |
|---|---|---|---|
| Gout (most likely) | Acutely inflamed, tender, swollen 1st MTPJ (podagra) with overlying erythema | Inspect and gently palpate the 1st MTPJ; note redness, swelling, extreme tenderness, warmth | Classic podagra is virtually pathognomonic of gout; no other common condition produces such an acutely inflamed 1st MTPJ without trauma |
| Septic arthritis | Fever + hot, swollen joint with restricted ROM | Measure temperature; attempt passive ROM of affected joint | Systemic fever + monoarthritis = septic arthritis until proven otherwise |
| Cellulitis / paronychia | Spreading erythema with warmth, ± purulent discharge at nail fold | Inspect periungual area; mark erythema border | Erythema spreading beyond the joint with skin portal suggests infection |
| PAD / critical limb ischaemia | Absent dorsalis pedis / posterior tibial pulse [1]; Buerger's test positive (elevation pallor → dependent rubor) [5] | Palpate foot pulses; perform Buerger's test | Absent pulses + trophic changes indicate arterial insufficiency as cause of ischaemic toe pain |
| Stress fracture | Point tenderness over the affected phalanx/metatarsal | Palpate along the bone; axial compression of the toe | Focal bony tenderness without joint involvement points to fracture |
Must-Not-Miss Red Flags – Urgent Referral
- Septic arthritis: Fever + acutely swollen joint → same-day ortho/rheum referral for joint aspiration before antibiotics.
- Critical limb ischaemia: Rest pain + absent pulses + ABI < 0.4 → urgent vascular referral [1].
- Osteomyelitis in diabetic foot: Non-healing ulcer + probe-to-bone positive → urgent imaging and surgical review [2].
Top traps that lose marks:
| Trap | How to Avoid |
|---|---|
| Diagnosing gout on serum urate alone | Serum urate can be normal during an acute flare. Gold standard = polarised microscopy of joint aspirate showing negatively birefringent monosodium urate crystals |
| Missing septic arthritis | Always ask about fever and immunosuppression. If in doubt, aspirate the joint. Septic arthritis and gout can coexist! |
| Forgetting to check pulses | Always palpate dorsalis pedis and posterior tibial pulses in any foot/toe complaint [1][5] |
| Not asking about DM | DM changes the differential dramatically (neuropathy, PAD, infection risk, diabetic foot) [2] |
| Ignoring ICE | ICE is separately scored on the CRF. Always ask explicitly. |
| Writing management instead of focusing on Hx/DDx | The CRF tests diagnosis and history, not a management plan. Keep management to a one-line safety-net. |
Shortest safe management / safety-net line: 「如果隻趾痛到好犀利，或者發燒，或者隻腳變凍變白，記得即刻去急症室。」 ("If the toe becomes extremely painful, you get a fever, or the foot turns cold/white, go to A&E immediately.")
GC Lecture High-Yield: Per GC 234 (Common Foot and Ankle Conditions), clinical evaluation of foot/toe should include 1st MTPJ ROM, 1st IPJ motion, 1st TMTJ hypermobility, DP pulse, medial toe sensation, and Beighton score [3]. Per GC 075 (Pain Red Joint), approach to monoarthritis must differentiate crystal arthritis, septic arthritis, and haemarthrosis [6]. Per WCS 002 (Toe Gangrene and Leg Ulcer), always assess ABI and peripheral pulses in any toe/foot complaint [1].
High Yield Summary
What to ASK: SOCRATES for toe pain, triggers (diet/alcohol/drugs), red flags (fever, absent pulses, wound), DM/CKD/PMH, ICE explicitly.
What to WRITE on CRF: CC with duration + side + joint; RFC = patient's real concern (not just "pain"); ICE verbatim; Most likely Dx = gout (if 1st MTPJ, acute, inflammatory); DDx = septic arthritis, cellulitis/paronychia, fracture; Biopsychosocial = acute gout pain / anxiety about recurrence / functional impairment at work; Physical sign = acutely inflamed tender swollen 1st MTPJ (podagra).
What NOT to MISS: Septic arthritis (fever + joint), critical limb ischaemia (absent pulses), diabetic foot (DM + neuropathy + ulcer). Always check pulses and sensation.
Active Recall - Family Medicine Clinical Test
[1] Lecture slides: WCS 002 - Toe gangrene and leg ulcer - by Prof SWK Cheng.pdf; also PPT_Clinical Demonstration_Vascular_2022.pdf [2] Senior notes: Ryan Ho Endocrine.pdf (Diabetic Foot section); Maksim Medicine Notes.pdf (Diabetic foot); Block A - Deterioration of eyesight in a diabetic patient_ diabetic complications.pdf [3] Lecture slides: GC 234. Common Foot and Ankle Conditions.pdf (p27, Clinical Evaluation) [4] Senior notes: Maksim Surgery Notes.pdf (Plantar fasciitis / Morton's neuroma section) [5] Senior notes: MBBS Final MB (Surgery) (Felix PY Lai).pdf (Buerger's test, ABI); Ryan Ho Cardiology.pdf (ABI assessment) [6] Lecture slides: GC 075. Pain red joint [Notes].pdf
Tiredness / Chronic Fatigue
Persistent, unexplained fatigue lasting six months or more that is not substantially relieved by rest and significantly impairs daily functioning.
Tremor
Tremor is an involuntary, rhythmic, oscillatory movement of a body part produced by alternating or synchronous contractions of opposing muscle groups.