Lichen Planus
Violaceous, flat-topped polygonal papules on the flexural surface of the wrists. (Courtesy Dr. S. Walsh)
Nails and Apparatus
Onychomycosis
Distal onycholysis, nail pitting, and subungual hyperkeratosis.
Squamous Cell Carcinoma
Indurated erythematous nodule or plaque with a hyperkeratotic surface, scale/crust, and central ulceration.
Malignant Melanoma
A pigmented lesion with asymmetry, an irregular border, variegated colour, and diameter greater than 6 mm.
Basal Cell Carcinoma No. 3
Note central ulceration. (Courtesy Dr. S. Walsh)
Basal Cell Carcinoma No. 2
Skin-coloured papule or plaque with rolled, translucent/pearly border and telangiectasia.
Basal Cell Carcinoma No. 1
Skin-coloured papule or plaque with rolled, translucent/pearly border and telangiectasia.
Heritable Disorders
Vitiligo
Sharply marginated, white patches completely devoid of pigment due to an acquired loss of melanocytes.
Erythema Nodosum
Tender, poorly demarcated, deep-seated nodules usually on lower extremities. (Courtesy Dr. M. Mian)
Urticaria
Circumscribed, raised, edematous, red plaques surrounded by faint white halo. (Courtesy Dr. S. Walsh)
