Dermatology Quiz

A child with dystrophic changes of the great toenails

Date Posted: 26/02/2021
Figure.
Figure. Lateral deviation of the left great toenail (case patient). Note the absence of nail changes to the adjacent toenails.

A 15-month-old boy presents with dystrophic changes of his great toenails.

What is the diagnosis?

Pruritic papules in a 10-month-old boy

Date Posted: 29/01/2021
Figure.
Figure. Crusted erythematous papules and pustules on the face and arm (case patient).

A 10-month-old boy presents with a six-week history of a pruritic papules.

What is the diagnosis and management?

Painful ulceration with necrosis on a finger

Date Posted: 18/12/2020
Fig 1.
Figure 1. Distal ulceration of the right ring finger with necrotic eschar, extending to the proximal phalanx on the dorsal surface. The ulceration extends to the metacarpophalangeal joint on the palmar surface (not shown).

A 38-year-old man presents with painful ulceration of his finger.

What is the diagnosis?

Red-pink papules around a scar on the eyebrow

Date Posted: 20/11/2020
Fig 1.
Figure 1. Scattered lesions on the patient’s eyebrow. The lesions started to appear four weeks after excision of a pyogenic granuloma.

A 55-year-old man presents with multiple smooth red-pink papules on his eyebrow.

What is the diagnosis?

An area of cutaneous atrophy on the abdomen

Date Posted: 23/10/2020
Fig 1.
Figure 1. The localised depression of the skin on the left lower quadrant of the abdomen. A continuous glucose monitoring device is located in the hypogastric region.

A 14-year-old girl presents with an area of cutaneous atrophy on her abdomen.

What is the cause and diagnosis?

Diffuse linear streaks on the trunk and limbs

Date Posted: 18/09/2020
Fig 1a.

A 65-year-old man presents with a rash of diffuse linear streaks.

What has caused this skin reaction?

A rapidly growing nodule on the scalp

Date Posted: 31/07/2020
Fig 1a.
Figure 1a. The lesion on the patient’s scalp. Actinic damage is noted on the surrounding skin.

An 80-year-old man presents with a rapidly growing nodule on his scalp.

What is the diagnosis?

New symmetrical hyperpigmented patches of skin

Date Posted: 03/07/2020

A 52-year-old man presents with hyperpigmented skin on his hands, arms and legs.

What is the diagnosis?

A photodistributed rash and muscle weakness

Date Posted: 05/06/2020
Fig 1a.
Figure 1a. Erythematous plaques overlying the metacarpophalangeal joints (case patient).

A 52-year-old man presents with a photodistributed rash and pruritic papules on his hands and elbows.

What is the diagnosis?

An acute generalised blistering eruption

Date Posted: 01/05/2020
Figure 1a. Case patient. Crusted lesions on the posterior trunk.

A 54-year-old woman presents with an acute blistering eruption.

What is the diagnosis and management?

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