The superficial subtype presents as a slowly growing, pink or red, slightly scaly patch with a fine, thread-like pearly border.
A form of squamous cell carcinoma in situ, presenting as a persistent, well-demarcated, slowly enlarging, red, scaly patch that does not respond to topical steroids.
A localized, well-demarcated, thickened (lichenified) patch of skin with exaggerated skin markings, caused by chronic rubbing and scratching.
Extramammary Paget's disease is a rare skin cancer presenting as a persistent, well-demarcated, red, scaly, and eczematous-looking patch in apocrine-gland rich areas.
The classic 'ringworm,' a fungal infection presenting as an annular, erythematous, scaling patch with a raised, active border and central clearing.
