Woman Who Stopped Her Statin Because of Aching Legs — Free SCA Practice Case
Woman who stopped her statin because of aching legs
Station Timer
Golden Minute
Initial Introduction
•Introduce yourself
•Ask an open question — "How can I help you today?"
•Listen — don't interrupt
•Catch early cues
Data Gathering
History, ICE & Diagnosis
Clinical Management
Diagnosis, Plan & Decisions
Safety Net
Follow-up & Close
Five cases are free: a live 12-minute consultation with an AI patient each, marked, and no card.
Materials for Candidate
Please review before starting the consultation
Full Name
Lucia Ferraro
Age
63 years
Consultation Type
TelephoneAge
63
Situation
Telephone Consultation. Booked by reception.
Reason for Encounter
"Rang to cancel her cholesterol blood test. Stopped her tablet because of aching legs. Wants a natural alternative."
Medical Records
- ●PMH: Hypertension. No cardiovascular disease. Brother had MI aged 58.
- ●Medications: Amlodipine 5 mg daily. Atorvastatin 20 mg daily, started 9 weeks ago; no repeat requested.
- ●Allergies: NKDA.
- ●Social: Ex smoker. Carer for her husband.
Recent Notes
- ●Bloods 11 weeks ago, before atorvastatin: BP 138/84. Total cholesterol 5.7, non HDL 4.6, LDL 4.0 mmol/L. ALT 22, eGFR 78, TSH 2.4, HbA1c 39. QRISK3 16.0%. Creatine kinase not measured.
Patient Script
For the friend playing the patient role
Character Overview: You are Lucia Ferraro, a 63 year old former school office manager. Your parents came to Bedford from southern Italy, and you have lived in the same terraced house for thirty years. Two years ago your husband Franco, now 68, had a stroke that left his right side weak and his speech slow. You gave up work to care for him. You help him in and out of his chair, on and off the toilet and the commode, and you wash and dress him. His bed is downstairs and you come down when he calls in the night. Nine weeks ago you started a cholesterol tablet, atorvastatin. About three weeks later the fronts of both thighs began to ache, and three weeks ago you stopped it without telling anyone. The aches are now much better. Your friend Teresa takes red yeast rice for her cholesterol, and you have bought a tub but not opened it. You are on the phone in the kitchen while Franco naps. You are warm, chatty, a little apologetic and tired. Your voice tightens when you talk about being laid up, and goes quiet and slow when the talk turns to what the stroke has done to Franco.
Opening Sentence: "Hello, doctor, thanks for ringing back. I only rang to cancel my blood test really, because I've stopped that cholesterol tablet. It was making my legs ache something awful. The lady on reception said I should speak to a doctor first. I wanted to ask about something natural I've read about instead."
History if Asked (Data Gathering Phase)
- ●The natural alternative (if asked what she has read about): "Red yeast rice. Teresa takes it. I've bought a tub but I haven't started it. I wanted to ask you first."
- ●Where and what the aches are: "The tops of both legs, at the front, both sides the same. A dull, dragging ache, like I'd climbed a mountain the day before. Not sharp. At its worst, six out of ten."
- ●When they started: "About three weeks after I started the tablet. I didn't think much of it at first, but it didn't go away."
- ●What makes them worse: "Stairs, and getting up off a low seat. And getting Franco up off the commode in the night, that was the worst."
- ●Stopping the tablet: "I took it every night. Then about three weeks ago I just stopped. I didn't tell anyone. I wanted to see whether my legs got better first."
- ●Since stopping: "Within a week it started easing. Now it's a niggle on the stairs at the end of the day, maybe two out of ten. Most days I hardly notice it."
- ●Strength: "They never gave way. I was frightened they might, getting Franco up, but I'm still doing everything for him, so they can't be that weak. No cramps, just the ache. I took paracetamol a few times when it was bad."
Ideas, Concerns, Expectations
Gating note: Lucia does not raise any of the following herself. Each part comes out only when the doctor asks what she thinks has happened, what is worrying her, or what she was hoping for.
- ●Ideas: She thinks the tablet was attacking her muscles and that something natural will be gentler. "There was a piece in the paper about muscles breaking down, and kidneys. I'm not risking that. And red yeast rice comes from rice, so it must be kinder on my legs. Teresa's been on it a year and her cholesterol's come right down."
- ●Concerns: Her main worry is being laid up. "If my legs go, who looks after Franco? There's nobody else. If I ended up in hospital he'd have to go into a home, and I promised him he never would." If the doctor explores further, or asks what she understood about why the tablet was started, a quieter fear comes out, in a slow, quiet voice: "I see every day what a stroke does. And then they tell me I'm high risk, and my brother had his heart attack. So I'm frightened of the tablet and frightened of what it's meant to stop. I don't know which is worse."
- ●Expectations: She hoped the doctor would say red yeast rice is fine and she could forget the blood test. "I'm not against a tablet altogether, if there's one that won't do my legs in."
If Asked: Medical History and Medications
Gating note: Lucia answers each of these plainly when the doctor asks about it.
- ●Blood pressure and medicines: Amlodipine every morning for about three years, usually about 130 over 80 at home. Nothing else apart from paracetamol now and then and the unopened red yeast rice. No grapefruit ("I can't stand it"). No allergies.
- ●Why the tablet was started: "A doctor rang and said my risk was sixteen per cent, I think. I didn't take the number in. I only said yes because of my brother."
- ●Family: Her brother Paolo had a heart attack at 58, had stents, and at 66 is doing fine. Nobody has had muscle problems.
- ●Other health: No thyroid symptoms ("I'm tired, but that's being up in the night"), no kidney or liver problems.
- ●Smoking and alcohol: About ten a day for twenty years, stopped twelve years ago when her mother got ill. A small glass of wine with Sunday lunch.
- ●Examination: If asked to stand up and sit down during the call, she declines: "I'm not going to start bobbing up and down with the phone in my hand. But I'm getting Franco up twenty times a day, so they can't be that weak. I can come in if you need to look." She is relieved if offered that.
Social History and Lifestyle Impact
- ●Caring: Lucia gave up her job when Franco had his stroke. She does all his care during the week and no paid carers come in. She has never had a carer's assessment and does not know what one is.
- ●Lifestyle impact: "When my legs were at their worst, the stairs were murder and I was dreading the nights. One night I was getting him off the commode and I thought, if these go, we're both on the floor. That's when I stopped the tablet."
- ●Support: Her son Marco comes every Saturday and showers his dad. Franco goes to the stroke club on Wednesday mornings, which is her morning for shopping or the hairdresser.
- ●Herself: "Nobody really asks about me. It's all about Franco, which is how it should be."
- ●Exercise, diet and weight: Her exercise is running round after Franco and a ten minute walk to the shops on Wednesdays. She cooks with lots of vegetables and olive oil, but picks at biscuits in the evening and has put on half a stone since the stroke. She hardly gets out in daylight.
If Asked: Associated Symptoms
Gating note: Lucia answers these only when the doctor asks about them directly.
- ●Muscle damage and general: No dark or cola coloured urine, no passing less urine, no fever, no feeling poorly, no weakness getting worse the more she does, no double vision, drooping eyelids or trouble swallowing,, no falls, nothing new in her activity.
- ●Other causes: Shoulders, neck and upper arms are fine. Only a few minutes of stiffness when first out of bed. No headaches, jaw pain or eyesight changes, back pain, calf swelling, numbness, chest pain or breathlessness.
Responses to Management (The Negotiation Phase)
- ●If the doctor explains that most aches in people taking a statin are not caused by the tablet:
- ●Reaction: A little defensive. "So you're saying it was all in my head? It wasn't, doctor, I could hardly get up the stairs." She settles if the doctor accepts the aches were real and explains that the only way to know is to try again carefully.
- ●If the doctor suggests trying a statin again, at a lower dose, a different statin or the same one:
- ●Reaction: Wary. "Go back on it? After what it did to my legs?" Once the plan is explained her questions are practical: "And if the aches come back? I can't be laid up. Would they get better again, or could it be for good?" On a lower dose: "Would a smaller dose even do anything?" She is reassured that any statin at any dose lowers risk, and that she can stop at once if the legs start again. She asks to start on a Friday so Marco is there on the Saturday. If ezetimibe is mentioned she asks: "Is that just a statin with a different name? Will it do the same to my legs?"
- ●If the doctor explains what red yeast rice contains, or dismisses it without a reason:
- ●Reaction: Surprised. "But it's natural. They wouldn't sell it if it wasn't safe, would they?" Once it is explained: "So it's the same sort of thing as the tablet, in a tub? Then I'm not taking it." If dismissed without a reason, stubborn: "Teresa's cholesterol came right down on it, so it must do something."
- ●If the doctor explains her risk in numbers, how long she would take a statin, or uses Franco's stroke to push her:
- ●Reaction: Numbers engage her. "Sixteen out of a hundred. That's more than I thought. How many would the tablet actually stop?" On duration: "So it's for the rest of my life?" If Franco's stroke is used to frighten her, hurt, her voice catching: "I know what a stroke is, doctor. I live with it every day. You don't need to tell me."
- ●If the doctor arranges a blood test now, or offers a carer's assessment or other support:
- ●Reaction: Practical about the test: "It's hard for me to get out. Could I do it on a Wednesday morning, when Franco is at the club?" Surprised and grateful about support: "I didn't know there was anything like that for me. What would they actually do?" She is most interested in a plan for who would look after Franco if she were taken ill.
- ●If the doctor gives vague safety netting, such as "ring us if you have any problems":
- ●Reaction: "What sort of problems? I don't want to be ringing every time I've done the stairs. What would actually mean I need to ring, and how quickly?"
Mark Scheme
Domain 1: Data Gathering and Diagnosis
Domain 2: Clinical Management and Medical Complexity
Domain 3: Relating to Others
Clinical Learning Points
The Core Dilemma and the Model Plan
- ●Lucia has stopped a statin for aching legs, wants a natural alternative and plans to cancel her blood test. The task is to find out whether the aches are likely to be statin related, to exclude serious muscle damage and other causes, to keep her on effective lipid lowering where she is willing, and to deal with the caring role that drives her fear of being laid up.
- ●Model answer: explain that most aches in people taking a statin are not caused by it; change the booked blood test to a creatine kinase (CK); wait until she has been free of aches for about 2 weeks; then restart at a lower dose or a switch, such as rosuvastatin 5 mg or atorvastatin 10 mg once daily, with a clear stop rule and review. Advise against red yeast rice, set out her risk in numbers, offer carer support and give a specific safety net.
- ●Also acceptable: retrying atorvastatin 20 mg to see whether aches return; rosuvastatin 10 mg; a lower intensity statin; or a low dose statin with ezetimibe. Ezetimibe alone is acceptable if, having heard the statin options, she declines any further statin and that informed choice is recorded.
How Often Aches Are Due to the Statin, and Assessing Them
- ●The NICE evidence review (NG238, December 2023) found that about 16% of people on a high intensity statin report muscle pain, but only about 1 in 12 of those cases was likely to be caused by the statin. The NICE decision aid shows about 2 in 100 people getting muscle pain because of a statin. Serious muscle damage is rare, about 3 extra cases per 10,000 people treated. The aches are real, but only a careful rechallenge shows whether the statin caused them.
- ●Typical statin aches are symmetrical, in the large proximal muscles such as the thighs, worse with exertion, starting within weeks to months and improving within about 2 weeks of stopping (NHS England statin intolerance pathway). Lucia fits this.
- ●Ask about true weakness, dark or cola coloured urine, passing less urine, fever and feeling unwell; with severe pain these need same day assessment. Weakness that worsens with activity, double vision, drooping eyelids or trouble swallowing (rarely reported with statins) needs prompt review.
- ●Other causes at her age include polymyalgia rheumatica (shoulder and hip girdle pain with morning stiffness over 45 minutes, sometimes with headache, jaw pain or visual change), an underactive thyroid, vitamin D deficiency, unaccustomed exertion and nerve root pain. Risk factors for statin muscle toxicity include female sex, thyroid disease, heavy alcohol, kidney or liver disease, vitamin D deficiency and interacting drugs including herbal products.
Investigations
- ●Measure CK when someone on a statin has unexplained muscle pain, tenderness or weakness; do not measure it in people without symptoms (NG238). The booked lipid test should be changed rather than cancelled, because her cholesterol off treatment adds little.
- ●CK below 5 times the upper limit of normal makes a statin cause unlikely; above 5 times, stop the statin. Above 10 times needs renal function and specialist advice, and above 50 times suggests rhabdomyolysis needing urgent inpatient care (NHS England pathway).
- ●If aches are atypical or have not settled about 6 weeks after stopping, look for another cause with inflammatory markers, bone profile, vitamin D and thyroid function, and examine her in person.
Rechallenge, Reduce or Switch
- ●NG238 (1.9.2) lists the strategies after side effects on a high intensity statin: stop and try again once symptoms settle, change to a different statin of the same intensity (rosuvastatin if on atorvastatin), reduce the dose, or move to a lower intensity statin. Any statin at any dose reduces cardiovascular risk, so aim for the maximum tolerated.
- ●The NHS England pathway advises a break of 4 to 6 weeks and at least 2 weeks symptom free with a normal CK before rechallenge, then atorvastatin 10 or 20 mg or rosuvastatin 5 or 10 mg, titrated at intervals if tolerated. Lucia stopped 3 weeks ago and still has a niggle, so the restart is in a few weeks, not now.
- ●Intensities (NG238): atorvastatin 20 to 80 mg and rosuvastatin 10 to 40 mg are high; atorvastatin 10 mg, rosuvastatin 5 mg and simvastatin 20 to 40 mg are medium; pravastatin and simvastatin 10 mg are low. The BNF starts rosuvastatin at 5 mg where muscle toxicity risk factors exist.
- ●Interactions: amlodipine may raise atorvastatin levels slightly, but the BNF lists no dose change, so it is no reason to avoid atorvastatin. The interaction that matters is simvastatin, which should not exceed 20 mg daily with amlodipine.
If a Statin Is Still Not Tolerated
- ●If aches return, stop until they settle, then try another statin, a lower dose, or alternate day or twice weekly rosuvastatin or atorvastatin, which have long half lives (outside the product licence; NICE CKS).
- ●Only when no statin regimen is tolerated is ezetimibe 10 mg daily used alone (NICE TA385). Bempedoic acid 180 mg with ezetimibe is an option if that is not enough (TA694). Consider lipid clinic advice according to local arrangements.
- ●Inclisiran requires established cardiovascular disease and the PCSK9 inhibitors need familial hypercholesterolaemia, so neither applies to her. CKS advises against coenzyme Q10 and vitamin D to improve adherence.
- ●One episode of aches on one statin does not make someone statin intolerant. If she declines all lipid lowering after an informed discussion, record the choice and offer to reassess risk later.
Red Yeast Rice
- ●Red yeast rice is rice fermented with a mould. Its main active ingredient, monacolin K, is chemically identical to lovastatin, so it is in effect an unregulated statin. It can cause the same muscle and liver effects and interactions, so it should never be taken with a statin or after stopping one for side effects.
- ●It is sold as a food supplement, so the amount of monacolin varies widely and some products have contained citrinin, a fungal toxin that can damage the kidneys. The European Food Safety Authority could not identify a safe daily intake. EU member states voted in May 2026 to ban monacolins in foods, while Great Britain has no specific limit; recheck the regulatory position before this case goes live.
Risk, Benefit and Her Other Risk Factors
- ●A QRISK3 of 16% means about 16 of 100 women with her profile would have a heart attack or stroke in 10 years. The NICE decision aid shows about 5 in 100 avoiding one with a high intensity statin at 15% risk, so her benefit is roughly 5 in 100, only while she takes it. Her brother's heart attack at 58 is part of her score. Present figures honestly; using her husband's stroke to pressure her damages trust.
- ●Blood pressure is on target (below 140/90 in clinic, NG136), so amlodipine continues. Realistic changes: a brisk walk while Franco is at the stroke club, fewer evening biscuits, the olive oil based diet and gradual weight loss.
Supporting the Carer, Follow Up and Safety Netting
- ●NICE NG150 asks practitioners to identify carers at every opportunity and tell them of the right to a carer's assessment under the Care Act 2014, which should include planning for emergency replacement care if the carer becomes suddenly unwell. Record her on the practice carers register, signpost the local carers' service, and book her blood test for Wednesday morning. A contingency plan for Franco makes a statin trial feel safe.
- ●Review by phone in 2 to 3 weeks with the CK result, then restart the agreed statin if she has been free of aches for 2 weeks, ideally on a Friday. Check symptoms 4 to 6 weeks later, and a lipid profile and ALT 2 to 3 months after starting, aiming for a fall of more than 40% in non HDL cholesterol.
- ●If aches return on the new tablet, stop it and contact the practice within a few days. Same day assessment for severe muscle pain or weakness, dark or cola coloured urine, or passing much less urine; prompt contact for weakness that worsens with activity, double vision, drooping eyelids or trouble swallowing; 999 for severe breathing or swallowing problems.
Common Mistakes in This Station
- ●Accepting "statin intolerant" after one statin and going straight to ezetimibe or giving up on lipid lowering.
- ●Restarting a statin while she still has aches, or without a CK check, or letting her cancel the blood test.
- ●Telling her the aches were in her head, or agreeing that the statin was damaging her kidneys.
- ●Approving red yeast rice as a gentler option, dismissing it without a reason, or never asking about supplements so the tub is missed.
- ●Missing the caring role, so the fear of being laid up is never addressed.
- ●Using her husband's stroke to pressure her into a tablet.
- ●Prescribing simvastatin above 20 mg with amlodipine, or offering injections she is not eligible for.
- ●Safety netting limited to "ring if there are problems", with no follow up date.
Further reading
From the PCCS Academy, the Primary Care Cardiovascular Society’s learning modules for primary care.
Free for practising healthcare professionals. You need a PCCS account to open these. Join the PCCS
Mapped to the RCGP curriculum topic: Cardiovascular Health.
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