Ethics · Advanced · Medical Error

Rash After Antibiotic Course

Practise this PLAB 2 ethics station on Antibiotic-Induced Rash. 8-minute voice AI simulation with feedback on all 3 marking domains.

Clinical scenario

You are an FY2 doctor in a GP surgery. Ms Melissa Simmons, a 32-year-old woman, has come in with a widespread rash that developed shortly after taking antibiotics for an upper respiratory infection. She is distressed and mentions she had previously been told she was allergic to amoxicillin. You need to acknowledge the error, apologise appropriately, and manage her acute reaction.

Background notes: PMH: Nil significant, previous amoxicillin allergy (age 22, rash reaction - non-anaphylactic)

What this station tests

  • Duty of candour for prescribing error: prescribing a documented allergen is a clinical error
  • Assessing rash severity: mild drug eruption versus Stevens-Johnson syndrome
  • Incident reporting: Datix for the prescribing error
  • Allergy record updating: specific reaction details, prominent flagging in all systems
  • Honest apology: not defensive, not minimising

How to use your 8 minutes

  • 0-1 min — Introduction: Introduce yourself. Establish the ethical issue and your role.
  • 1-3 min — Explore Perspective: Listen to patient/relative perspective. Understand their reasoning and concerns.
  • 3-5 min — Ethical Framework: Apply ethical principles: autonomy, beneficence, non-maleficence, justice. Reference relevant guidelines (GMC, Mental Capacity Act).
  • 5-7 min — Negotiate and Plan: Find common ground. Explain your professional obligations. Involve MDT where appropriate. Document plan.
  • 7-8 min — Closing: Summarise agreed position. Outline next steps. Offer further discussion.

Consultation approach

The opening

A patient presenting with a rash after antibiotics prescribed by your practice requires honest assessment: was the allergy documented? Was the antibiotic appropriate? Ms Simmons is 32, with a widespread rash after amoxicillin prescribed for a sore throat. She has a documented penicillin allergy. Open with: 'Ms Simmons, I am very sorry about the rash. I need to understand exactly what happened.'

Core approach

Assess the rash. Is this a mild drug eruption (maculopapular, itchy, no mucosal involvement) or a severe reaction (Stevens-Johnson syndrome: target lesions, mucosal involvement, blistering)? If severe: emergency management. If mild: antihistamines, stop the drug, monitor.

Investigate what happened. Was her penicillin allergy documented in the records? (Yes, it was.) Was it checked before prescribing? (Apparently not.) This is a prescribing error: prescribing a known allergen. Duty of candour applies: 'I need to be honest with you. Your penicillin allergy is documented in your records, and the amoxicillin should not have been prescribed. I am very sorry this happened.'

She is angry and frightened. Both are valid. She wants to know: will the rash cause permanent damage? (Usually not for mild drug eruptions.) Could it have been worse? (Yes, severe reactions are possible.) Why did this happen? (A checking error.)

Closing and safety netting

Treatment: stop amoxicillin (already done). Antihistamine for the rash. If spreading or mucosal involvement: oral prednisolone or hospital assessment. Incident report (Datix) for the prescribing error. Allergy flagged prominently in all systems. PALS if she wants to complain.

Reassure about the rash (usually resolves within days to weeks after stopping the drug). Update her allergy record with the specific reaction details. 'I will make sure this is flagged clearly so it cannot happen again.' Follow-up in 1 week to check resolution. Safety net: 'If the rash worsens, you develop mouth blisters, or feel unwell, come in urgently or go to A&E.'

How examiners mark this station

Examiners will assess your ethical reasoning and interpersonal skills. Domain 2 (Clinical Management) is primary: marks for applying an ethical framework, referencing relevant legislation and guidelines, and reaching a reasoned position. Domain 3 (Interpersonal Skills) is equally weighted: marks for non-judgmental exploration, empathic communication, and negotiation skills. Domain 1 (Data Gathering) assesses your ability to fully explore the situation before forming a view.

Domain 1 (Primary focus)

Scores well: Rash severity assessed (mild vs SJS). Allergy history confirmed in records. Prescribing error identified. Reaction documented for allergy record.

Costs marks: Not assessing severity. Not checking records.

Domain 2 (Primary focus)

Scores well: Drug stopped. Antihistamine. SJS safety netting. Incident reported. Allergy record updated. PALS offered.

Costs marks: Not stopping drug. Not reporting. Not updating allergy record.

Domain 3 (Primary focus)

Scores well: Honest apology. Acknowledging the error. Validating her anger. Not defensive. Committing to prevention.

Costs marks: Defensive. Minimising. Not apologising. Blaming others.

Common examiner feedback (and how to fix it)

Did not demonstrate adequate ethical reasoning or application of relevant guidelines

Fix: Structure your response around the four ethical pillars (autonomy, beneficence, non-maleficence, justice). Reference specific guidelines (GMC, Mental Capacity Act) where relevant.

Did not sufficiently recognise or respond to the patient's feelings, concerns, or expectations

Fix: Acknowledge the emotional weight of the situation early. Show that you understand why this is difficult before applying ethical reasoning.

Common mistakes in this station

  1. Being defensive: a documented allergy that was not checked before prescribing is a clear error
  2. Not assessing for severe reaction: SJS requires emergency management
  3. Not reporting the incident: prescribing a known allergen is a patient safety incident

Resitting PLAB 2?

If you have found ethics stations difficult, focus on learning a clear ethical framework (the four pillars) and practising how to apply it conversationally rather than reciting principles. Examiners reward candidates who can explore the tension between competing ethical principles while remaining empathic and non-judgmental.

Example opening

Thank you for coming in to speak with me. My name is Dr [Name]. I understand there is something important we need to discuss. Could you tell me your understanding of the situation?

Frequently asked questions

What is the right way to handle the antibiotic-Induced rash scenario in this station?

A patient presenting with a rash after antibiotics prescribed by your practice requires honest assessment: was the allergy documented? Was the antibiotic appropriate? Ms Simmons is 32, with a widespread rash after amoxicillin prescribed for a sore throat. She has a documented penicillin allergy.

Where are marks won and lost in this antibiotic-Induced rash station?

Examiners reward: Rash severity assessed (mild vs SJS). Allergy history confirmed in records. Prescribing error identified. Reaction documented for allergy record. Candidates are penalised for: Not assessing severity. Not checking records.

Where do candidates most often go wrong in this station?

Being defensive: a documented allergy that was not checked before prescribing is a clear error.

Can I do well in this station without real-world experience of antibiotic-Induced rash?

This station rewards process over personal experience. The skill being assessed: Assessing rash severity: mild drug eruption versus Stevens-Johnson syndrome. Work through the consultation approach above, then rehearse it aloud under the 8-minute time pressure so the structure holds up in the exam.

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