Unit quiz: Clinical boundaries: itch, hair loss, pigment and light

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5 questions · 80% to pass · no timer. This quiz checks the lessons in this unit. These authored questions assess recognition and application of the taught distinctions, not professional qualification. You may review the lessons and retry. Repeat attempts reuse the question bank; a remembered answer is not proof of transfer to a new situation.

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Question 1

A 68-year-old learner reports generalised itching for three months, worse at night, with no visible rash. She has tried three 'soothing' body lotions and an oat-based cream. What is the correct response?Generalised itch lasting more than six weeks on apparently unchanged skin is a recognised clinical category with systemic causes, so she needs assessment including blood tests, and emollients are supportive care rather than a diagnostic trialItch without a rash is dry skin by definition, so the answer is a thicker occlusive applied twice daily for eight weeks before considering anything else

Question 2

Three months after childbirth a learner notices heavy diffuse shedding on her pillow and in the shower. She has no scalp symptoms, no patches and no family history of pattern loss, and she asks which growth serum to buy. What is the best answer?Postpartum hair loss is permanent unless treated early, so a caffeine and peptide serum should be started immediately to prevent follicle lossThe timing and diffuse pattern fit acute telogen effluvium, which usually remits on its own within six months, so the priority is correcting any trigger and waiting rather than buying a growth product

Question 3

A learner developed symmetrical brown patches on both cheeks during pregnancy. Twelve weeks of a cosmetic niacinamide brightening serum have changed nothing. She asks whether to buy a stronger over-the-counter lightener. What is the correct appraisal?The pattern is consistent with melasma, a clinical diagnosis in which photoprotection including visible light is the intervention with the clearest rationale, and the prescription options that follow diagnosis are not cosmetic purchases, with hydroquinone not permitted in cosmetics in the European UnionThe serum failed because the concentration was too low, so a higher-strength over-the-counter lightener with hydroquinone is the logical next step

Question 4

A learner taking doxycycline for acne spends an afternoon gardening and develops a sharply defined burning redness on the forearms, neck and face by evening. She wants to know which sunscreen to switch to. What is the correct response?The reaction shows her sunscreen failed, so a higher SPF with a physical filter will solve the problem and the antibiotic can continue unchangedThis is a phototoxic pattern that sunscreen cannot prevent on its own, so she should contact the prescriber about the drug while using clothing, shade and a broad-spectrum product as adjuncts, and she should not stop the medicine on her own

Question 5

A learner wants to know whether a new serum reduces her cheek redness. She applies it to the left cheek only, changes her pillowcase at the same time, takes phone photos at different times of day, and decides after nine days that the left side looks better. How should this test be judged?The test cannot answer the question: it changed more than one variable, ran for less than a typical biological response window, used uncontrolled photographs and had no pre-specified decision rule, so a paired multi-period design with a fixed outcome and a blinded assessor is neededBecause the product was applied to one cheek only, the comparison is internally controlled and the visible improvement on that side is sufficient evidence

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