No new drug approvals, withdrawals or safety communications affecting dermatology today.
New guidance has been published on diagnostic testing in adults with presumed atopic dermatitis that is refractory to treatment — a scenario where the most important question is often whether the diagnosis is right.
The differential behind refractory presumed atopic dermatitis is broad and includes conditions with quite different management: allergic contact dermatitis superimposed on atopic disease, cutaneous T-cell lymphoma, scabies, and drug reactions. Each is missed regularly, and the cost of missing them rises as treatment escalates — a patient on a biologic for mycosis fungoides is not merely untreated but potentially harmed.
Separately, the European Society of Contact Dermatitis has updated its guideline on diagnostic patch testing, which bears directly on the same problem: contact allergy is the commonest reversible reason a presumed atopic dermatitis does not respond, and patch testing is how it is found.
Both documents point the same way. Before the next escalation in an unresponsive patient, the question worth asking is whether the diagnosis has been tested rather than assumed.
- No new approvals, recalls or safety communications for dermatology today
- Refractory presumed atopic dermatitis is often a diagnostic problem
- Cutaneous T-cell lymphoma and scabies are the misses that matter most
- Contact allergy is the commonest reversible cause of non-response
- ESCD patch testing guideline updated in parallel
The statistics, in plain English
Diagnostic guidance reports no effect estimate; its value is in changing pre-test probability. When a treatment fails, the probability that the original diagnosis was wrong rises — sometimes substantially — and guidance of this kind formalises when that shift is large enough to justify retesting rather than escalating.
Read the rest in the app
You have read your two free briefings this month. The app carries all 27 specialties, every morning, free — and this finding is waiting in it.
Scan to keep reading on your phone. No account needed to start.
Tomorrow morning, before your first patient
One edition a day for dermatology, written by the desk, every claim tied to its paper. Six minutes.
Get the app — free