Quiz
Mixed diagnoses – 10 cases (11 of 11)

For each of the ten cases, study the image and then answer the questions. You can click on the image to view a larger version if required.

Each case should take approximately five minutes to complete. There is a list of suggested further reading material at the end of the quiz.

When you finish the quiz, you can download a certificate.

Case 3

A 17-year-old netball player twisted her ankle, which was strapped. This impressive itchy rash was found when the strapping was removed a week later.

What is the diagnosis?

Contact dermatitis

What are possible causes?

Contact allergy to a component of adhesive tape or spray e.g. flexible collodion (most likely allergen is colophony), antiseptic (iodine, chlorhexidine), or resin.

What tests can elucidate the cause?

Patch testing performed by a specialist dermatologist, using the European standard battery, other relevant allergens, and specific materials used on the patient.

What is the treatment?

Potent or ultrapotent topical steroid ointment for several weeks, and avoidance of contact with the responsible material lifelong.

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