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Dermatology Quiz

A persistent red nodule on the nose

Fig 1. Nodule on nose
Figure 1. Erythematous nodule on the nose.

A 55-year-old woman presents with an asymptomatic red nodule present for eight months on her nose.

Infiltrated pretibial plaques

Fig 1. Pretibial skin
Figure 1. Waxy, infiltrated pretibial skin.

A 57-year-old woman presents with waxy infiltrated plaques on her legs and feet. Biopsy revealed diffuse dermal mucinosis.

Irritable rash in the beard area

Fig 1. Irritable rash
Figure 1. Irritated follicular papules on the cheek and neck.

A 37-year-old man presented with a papular rash and irritated skin in the beard area that had made shaving difficult.

Plaster-like keratoses on the lower limbs

Fig 1. Keratoses
Figure 1. Numerous grey to white keratoses on the lower limbs.

A 55-year-old woman presents with multiple plaster-like keratoses on her limbs.

Translucent blister on the finger

Fig 1. Translucent cyst
Figure 1. Translucent cyst proximal to the nail fold of the index finger.

A man presents with a blister on his index finger which has been present for six months.

Enlarging pigmented lesion on the foot

Fig 1. Tan patch
Figure 1. Mottled, tan-coloured patch on the sole of the foot.

A 42-year-old man presented with an enlarging pigmented lesion on the sole of his foot.

Cobblestone plaques on the legs

Fig 1. Violaceous plaques
Figure 1. Violaceous plaques on the back of the calves.

A 32-year-old man presents with large, violaceous cobblestone plaques on his legs.

Progressive dusky facial erythema

Fig 1. Dusky erythema
Figure 1. Dusky erythema and swelling on the face, ear and neck.

An elderly man presents with progressive asymptomatic erythema and oedema on one side of his face over a 10-month period.

Annular scaling lesions on the limbs

Fig 1. Annular scarring
Figure 1. Annular scaling and crusted lesions on the extensor surface of the arm.

A 75-year-old woman presented with multiple scaling annular lesions on the sun-exposed skin of her limbs.

Pustules with scarring alopecia

Fig 1. Follicular cysts
Figure 1. Multiple small follicular cysts, papules, pustules and patchy scarring on the occipital area.

A 35-year-old man presents with multiple pustules and patchy alopecia on the occipital area of his scalp.

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