This audit is for higher specialty trainees preparing for the SCE in Dermatology who assumed BMJ OnExamination sells a dermatology-specific bank and want to know what its analytics really tell them. Checked on 20 July 2026, the principal limitation is unavoidable and comes first: BMJ OnExamination does not publish an SCE Dermatology product. Its analytics are genuinely good, but for this exam there is no dermatology-blueprinted content underneath them.
What BMJ OnExamination offers for SCE Dermatology right now
Lead with the honest finding, because it changes every downstream decision. As of 20 July 2026, BMJ OnExamination's Specialty Certificate Examination range is Acute Medicine, Endocrinology & Diabetes, Geriatric Medicine, Respiratory Medicine, Neurology and Medical Oncology (vendor-reported, onexamination.com). There is no SCE in Dermatology product; the direct product URL returns a 404 and dermatology is absent from the site's SCE navigation. The only dermatology questions on the platform sit as a subject filter inside its MRCP(UK) Part 1 and Part 2 banks, where dermatology is a small blueprint slice, not a 200-question SCE-aligned resource.
That matters because the platform's headline strengths are real. BMJ OnExamination provides "Performance Feedback & Peer Comparison," which the vendor describes as showing "how likely you are to pass" alongside graphs that "benchmark you against your peers"; "High Impact Questions" that the vendor states are algorithmically ranked by clinical tutors and user interactions; mock tests; and filtering by topic, type and difficulty (vendor-reported, 20 July 2026). None of that helps if the underlying content is not written to the SCE Dermatology curriculum. Analytics can only measure the coverage you feed them.
| Item (SCE Dermatology) | Status on 20 July 2026 |
|---|---|
| Dedicated SCE Dermatology bank | Not offered (vendor-reported; product URL 404s) |
| Dermatology content available | Subject filter within MRCP Part 1/2 banks only |
| Analytics/feedback | Peer comparison, pass-likelihood indicator, difficulty filter (vendor-reported) |
| "Adaptive" element | High Impact Questions ranking (vendor-described; verify in-product) |
| Access/price | Tiered subscriptions vary by product; verify current pricing on the product page |
| Blueprinting to SCE Dermatology | None; MRCP dermatology is not the SCE Dermatology blueprint |
The SCE Dermatology exam: the official format and blueprint
The SCE is delivered by the Federation of Royal Colleges of Physicians (MRCP(UK)) in a single generic structure. You sit two papers on one day—Paper 1 in the morning, Paper 2 in the afternoon, with a break between—each three hours long and each containing 100 best-of-five questions, for 200 questions in total. Delivery is computer-based at a test centre, one mark per correct answer, with no negative marking. What changes between specialties is not the structure but the blueprint.
The published SCE Dermatology blueprint distributes those 200 questions approximately as follows (Federation blueprint; indicative counts, "the actual number may vary"):
| Blueprint domain | Approx. questions |
|---|---|
| General dermatology & dermatology in primary health care | 48 |
| Paediatric and genetics | 30 |
| Skin oncology | 18 |
| Skin biology & research | 14 |
| Cutaneous allergy | 10 |
| Dermatopathology | 10 |
| Dressings & wound care | 10 |
| Formulation & systemic therapy | 10 |
| Genito-urinary disorders and oral medicine | 10 |
| Infectious disease | 10 |
| Skin surgery and cosmetic dermatology | 10 |
| Photodermatology | 8 |
| Dermoscopy | 4 |
| Psychodermatology | 4 |
| Skin of colour | 4 |
Distinguish official requirements from third-party claims cleanly: the Federation sets the format and the blueprint. Any vendor's "SCE-style" label is a claim about alignment, not an official endorsement, and BMJ OnExamination makes no dermatology-alignment claim because it has no dermatology product to align.
Define every metric before you trust it
Even without a dermatology bank, the analytics-reading skills transfer to whatever specialty bank you do buy, so define each metric precisely. First-attempt accuracy is your percentage correct on items you have never seen; it is the only figure that behaves like an exam. Repeat accuracy is your percentage on items you have already attempted, and it drifts upward through recognition rather than reasoning. Percentile or peer benchmark places you against other users of the same product, a population that is neither the SCE cohort nor a fixed reference group. A pass-likelihood indicator—BMJ's "how likely you are to pass"—is a low-resolution readout built on self-selected practice, not a calibrated pass prediction. Coverage is the proportion of the bank you have attempted, which says nothing about the proportion of the blueprint you have mastered. Difficulty is usually a cohort statistic (how often others answered correctly), not an intrinsic property. Time per item is the most honest number on the dashboard, because it is hard to game.
Selection bias: why the home-screen average lies
The number a revision platform shows you is almost never comparable to your real exam performance, for a structural reason. When you choose topics, redo flagged items, practise untimed with explanations one click away, and let an algorithmic feed such as High Impact Questions steer you toward what it deems worth revising, you are not sampling the blueprint—you are sampling your own attention. Weak areas can be over-sampled (good for learning, bad for measurement) and comfortable areas under-tested. The resulting percentage rises without your readiness rising. This is exactly the failure mode described in why your Q-bank percentage is not your exam score: the denominator is curated, so the ratio is not a grade.
Blueprint audit: attempted distribution versus official weighting
Do not trust the average on the home screen; audit the distribution behind it. Export or tally your attempts by domain and lay them against the SCE Dermatology blueprint above. The recurring pattern is over-practice of high-volume, comfortable areas (general dermatology, skin oncology) and systematic under-practice of the low-count domains that still appear every diet—dermoscopy, psychodermatology, skin of colour, photodermatology. Because BMJ OnExamination cannot supply blueprinted dermatology coverage at all, this audit is precisely where it fails a dermatology candidate: you cannot build a blueprint-coverage matrix from questions that do not exist on the platform. The method itself is set out in the completion-is-not-coverage blueprint-matrix guide.
The readiness test: what a credible signal requires
A dashboard number is only a readiness signal when five conditions hold at once: the items are unseen (first attempt, not reviewed), the block is timed at exam pace (roughly 1.8 minutes per best-of-five item), the content is mixed across the whole blueprint rather than a single revised topic, you work with no assistance (no open explanations, no peeking), and the sample is large enough to be stable—treat a single 20-item run as noise and prefer blocks of 100 or more. Any figure produced outside those five conditions is a study metric, not a readiness metric. BMJ's mock tests satisfy the timed and mixed conditions for the exams it covers, but not for dermatology.
Override rules: force what the feed under-samples
When you do assemble a dermatology revision stack, override any algorithmic feed on a fixed schedule. Force low-volume domains (dermoscopy, photodermatology, psychodermatology, skin of colour) into every week even when a High-Impact-style ranking keeps surfacing common inflammatory dermatoses. Force image-dependent items—clinical morphology, dermoscopic patterns, dermatopathology slides—because these are the SCE's signature and the part a text-only feed quietly avoids. Force formulation and systemic therapy, where the medicines detail must come from the SmPC/eMC and current NICE or specialty-society guidance rather than half-remembered ward practice. The feed optimises for engagement; the exam samples the whole curriculum.
Worked example: turning a dashboard into next week's quotas
Suppose a trainee shows an 82% overall average, but the breakdown reads: 240 attempts in general dermatology at 88%, 30 in skin oncology at 79%, 8 in dermoscopy at 50%, 0 in photodermatology, 0 in skin of colour, and a mean 55 seconds per item (well under exam pace). The 82% is meaningless as a readiness signal—it is an average over a self-selected, untimed, unbalanced sample. Translate it into quotas instead of a pass prediction:
| Signal | Reading | Next week's action |
|---|---|---|
| 88% general dermatology, high volume | Over-sampled comfort zone | Cap at 20 timed unseen items |
| 50% dermoscopy, tiny volume | Genuine weakness, under-tested | 40 items, spaced across the week |
| 0 photodermatology / skin of colour | Blind spot | 25 items each, unseen |
| 55s per item | Pace inflated by untimed practice | Move all blocks to timed mode |
No pass percentage is generated, because none is defensible from this data.
Seven-day plan: SCE Dermatology practice with iatroX
iatroX offers a dedicated SCE Dermatology question bank, rather than only general UK or MRCP-level practice. You can explore sample questions, review explanations, work through a missed answer with Tutor, and choose adaptive practice, spaced review or timed mock options within the selected bank. Audit the available topic and image coverage against the official blueprint before deciding which supplementary resources you need; the presence of a dedicated bank does not establish complete coverage or predict a pass.
| Day | SCE Dermatology practice in iatroX | Review or measurement |
|---|---|---|
| Mon | Try sample questions and inspect the available topic choices | Compare the bank with the official blueprint; record image-practice gaps |
| Tue | Practise a weak topic from your recent answers | Use explanations or Tutor to work through a missed decision |
| Wed | Select available dermatopathology and skin-oncology practice | Add specialist image resources where the available questions do not meet your needs |
| Thu | Practise available paediatric and genetics questions | Keep new-question results separate from repeat-question recall |
| Fri | Address the low-volume domains your coverage audit flags | Revisit earlier errors with spaced review |
| Sat | Choose an available timed SCE Dermatology mock | Record first-attempt accuracy, pacing and which domains were sampled |
| Sun | Review the week's missed questions and saved learning points | Set the next week's priorities from the remaining gaps |
The dedicated iatroX bank can support both dermatology practice and follow-up learning. A second specialty resource is optional: add one when your audit identifies a specific gap, particularly in image-dependent practice, rather than assuming iatroX only covers general medicine. For measurement, reserve genuinely new questions, record repeats separately and use timed mixed blocks; neither a second platform nor a familiar high score guarantees independent items or exam readiness. See the two-Q-bank rule for deciding whether another bank adds useful coverage.
Three mistakes this audit is designed to stop
First, buying a subscription for a bank that does not cover your exam because the brand is familiar—BMJ OnExamination is a strong MRCP resource, which is not the same as an SCE Dermatology resource. Second, reading a pass-likelihood indicator as a pass prediction; it is a coarse signal on curated data. Third, letting an algorithmic feed define your coverage, so that image-heavy, low-count domains never surface and your average climbs while your blind spots stay intact.
Decision checklist: continue, supplement, switch or stop
Continue with BMJ OnExamination if your target is a product it currently offers or you still need its MRCP-level practice; verify its catalogue rather than extending this dated audit into a current availability claim. Use dedicated dermatology practice for the SCE: iatroX has an SCE Dermatology bank with samples, explanations, Tutor follow-up and timed mock options. Supplement when an audit identifies a particular topic or image-practice gap; do not infer comprehensive blueprint or image coverage from a product label. Move to mixed mocks when you need to assess pacing and unaided first-attempt performance. Base each choice on the gap you need to address, rather than brand familiarity, novelty or sunk cost.
Bottom line
This July 2026 audit found no dedicated BMJ OnExamination SCE Dermatology product; candidates should check its current catalogue before buying. The iatroX product description has been corrected: iatroX does offer a dedicated SCE Dermatology question bank, with sample questions, explanations, Tutor support and timed mock options. Assess its currently available questions against the official blueprint and supplement specific topic or image-practice gaps where needed. Keep first-attempt, timed, mixed practice distinct from repeat accuracy; these are useful study signals, not a validated pass prediction.
FAQ
Is BMJ OnExamination enough for SCE Dermatology on its own? No, and not because it is weak but because, as of 20 July 2026, it does not publish an SCE Dermatology bank at all (vendor-reported). Its dermatology questions exist only as a subject filter inside its MRCP Part 1/2 products, which are not blueprinted to the SCE Dermatology curriculum, so it cannot on its own cover an exam it does not target.
Which SCE Dermatology component does BMJ OnExamination not reproduce well? The image-dependent core—clinical morphology, dermoscopy and dermatopathology—together with the low-count but reliably examined domains such as photodermatology, skin of colour and psychodermatology. A general MRCP subject filter will not surface these at SCE depth, which is exactly where a candidate needs blueprinted volume.
How many BMJ OnExamination questions should I complete per day for SCE Dermatology? For the catalogue checked in this article, a daily BMJ dermatology quota is not a suitable SCE target. Set your practice budget around your exam date and identified domain gaps instead. The dedicated iatroX SCE Dermatology bank supports topic-selected practice, explanations and Tutor follow-up; use available timed mixed blocks for measurement and track repeat questions separately.
When should I stop using BMJ OnExamination and move to mixed mocks? If your target is SCE Dermatology, use a dedicated bank, including the iatroX SCE Dermatology bank, rather than relying on MRCP subject filtering. Introduce available timed mixed mocks to assess unaided performance and pacing, and review the sampled domains. A pass-likelihood indicator or a high score on repeated questions is not a sufficient trigger by itself.
How should I combine BMJ OnExamination with iatroX without duplicating practice? Keep BMJ OnExamination for MRCP-level general medicine if you still need that practice. Use the dedicated iatroX SCE Dermatology bank for specialty questions, explanations, Tutor follow-up, spaced review and available timed mocks. Add a further resource only for an identified coverage or image-practice gap. Track previously seen questions across tools; using two platforms does not guarantee that the items are independent.
Editorial notes and references
Written by Dr Kolawole Tytler, NHS GP and founder of iatroX. The original exam and BMJ OnExamination catalogue audit was checked on 20 July 2026. The iatroX product description was corrected on 7 October 2026 to identify its dedicated SCE Dermatology bank, sample questions, Tutor follow-up and timed mock options. This product correction retains the original dates of the exam and competitor checks. Vendor product ranges, feature descriptions and pricing can change; verify the current position before buying. Disclosure: iatroX operates a competing SCE Dermatology question bank and clinical-knowledge platform. Dedicated availability is not a claim of complete blueprint or image coverage, official endorsement, or a validated pass prediction. Corrections are welcome via the feedback route on iatrox.com. References: Federation of Royal Colleges of Physicians (MRCP(UK)) SCE format and SCE Dermatology blueprint; BMJ OnExamination product and features pages (onexamination.com); and the iatroX framework pieces linked above on Q-bank percentage and blueprint-coverage matrices. Compare tools on the iatroX comparison hub.