Dermatology Quiz

Multiple scrotal nodules with a chalky discharge

Fig 1. Scrotal nodules
Figure 1. Multiple nodules with chalky discharge on the scrotum.

A 45-year-old man presents with multiple nodules discharging a chalky substance on his scrotum.

Translucent, reddish-blue nodule on the lip

Fig 1. Translucent nodule
Figure 1. Reddish-blue translucent nodule on the lower lip.

A 28-year-old man presents with an asymptomatic reddish-blue translucent nodule on his lip.

Recurrent painful mouth ulcers

Fig 1. Mouth ulcers
Figure 1. Small painful ulcers on the mucosal surface of the lower lip.

A 36-year-old man presents with recurrent, painful ulcers on his lips and mobile oral mucosa.

Itchy, rippled skin pigmentation

Fig 1. Hyperpigmentation
Figure 1. Marked rippled hyperpigmentation over the upper back.

A 39-year-old man presented with a longstanding, widespread, itchy, brown pigmentation with a rippled pattern on his trunk and limbs.

Alopecia with dull, broken hairs

Fig 1. Diffuse alopecia
Figure 1. Large area of diffuse alopecia with dull, broken hairs.

A 33-year-old man presents with a large area of hair loss and damaged hair on his scalp.

Alopecia with broken hairs

Fig 1. Alopecia
Figure 1. Alopecia demonstrating irregular margins with partial regrowth and broken hairs of uneven length.

A 33-year-old woman presents with a 12-month history of an asymmetrical nonscarring alopecia.

Progressive infiltration of the upper body

Fig 1. Thickened skin
Figure 1. Grossly thickened skin producing coarse folds.

A 37-year-old man with diabetes presents with a long history of progressive swelling of the upper body.

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.