Morphology Dr. D. Czarnecki MD MBBS

A macule - flat This was a melanoma

Macular lesions (flat) A drug eruption due to ampicillin

Papules - raised Psoriasis was the cause

An inflamed papule A squamous cell carcinoma (SCC) was the cause

Lichenoid papules Shiny lilac colour Lichen planus was the cause

The Koebner phenomenon The Koebner phenomenon The rash has developed in a damaged area Lichen planus (LP) was the disease Lichen planus (LP) was the disease Scratching damaged the skin – new areas of LP developed

The Koebner phenomenon The Koebner phenomenon Psoriasis was the underlying disease Psoriasis was the underlying disease

The Koebner phenomenon The Koebner phenomenon Psoriasis developed in sun burned skin Psoriasis developed in sun burned skin

A plaque – raised and thick Psoriasis was the cause

A plaque Necrobiosis lioidica diabeticorum was the cause

Vesicles – becoming pustular Chicken pox (varicella) was the cause

Bullae – big blisters Bullous pemphigoid was the cause

Folliculitis – pustules around hair follicles Waxing the legs was the cause

Palms with pustules Pustular psoriasis

Ecchymoses - bruising Thin skin due to too much sun was the cause

Purpura Cryoglobulins were the cause

Grouped vesicles, pustules and purpura Herpetiform (grape like) Herpes zoster (shingles) was the cause

Grouped vesicles and pustules Herpetiform (grape like) Herpes simplex the cause

A nodule arising in the eye lid A Merkell cell carcinoma was the cause

A nodule (ulcerated) in the pre-auricular area A squamous cell carcinoma (SCC) was the cause

Erosions on the thighs A drug eruption was the cause

An ulcer in the scrotum Behcet’s disease was the cause

Excoriations – scratch marks Due to a psychological disorder

Asteatotic (dry cracked) skin Dermatitis (eczema) was the cause

Xerosis – dry skin

A verrucous (wart like) lesion A seborrhoeic keratosis was the cause

Ichthyosis – looks like fish scale An inherited disease

An annular (circular) lesion This was porokeratosis of Mibelli

An annular (circular) lesion Sarcoid was the cause

Dermographism (writing on the skin) It is a form of urticaria

Telangiectasia (dilated blood vessels) Radiotherapy was the cause

Depigmentation Vitiligo was the cause

Hyperpigmentation Application of a cream containing hydroquinone was the cause

Maceration Excessive sweating was the cause