logo Disorders of pigmentation diagnostic challenge

Miscellaneous dermatology

Disorders of pigmentation diagnostic challenge

Match each picture with the correct diagnosis:

Mix and match: [table] : Pityriasis versicolor : Postinflammatory hypopigmentation : Vitiligo : Halo naevus Mix and match: [table] : Keratinocyte || Hyperpigmented scaly plaques (acanthosis nigricans) : Haemosiderin || Subungual haematoma : Melanocyte || Congenital melanocytic naevus : Exogenous (drug) || Diffuse blue-black pigment due to 2-year course of minocycline for rosacea

Hyperpigmentation

Mix and match: [table] : Pityriasis versicolor || Hyperpigmented flakey plaques due to malassezia infection : Lentigo || Well demarcated light brown facial macule due to photoageing : Postinflammatory hyperpigmentation || Irritant dermatitis was followed by postinflammatory pigmentation : Melasma || Irregular roughly symmetrical macular facial pigmentation