Erythroderma
A severe generalised skin condition characterised by redness and scaling affecting more than 90% of the body surface area.
Topical Corticosteroid
A steroid preparation applied directly to the skin to reduce inflammation, classified into potency grades from mild (Cla...
Transepidermal Water Loss
The passive diffusion of water vapour through the epidermis to the skin surface, used as an objective measure of barrier...
Tzanck Smear
A rapid cytological test in which cells scraped from a vesicle base are stained to detect multinucleated giant cells ind...
Urticaria
A skin condition characterised by transient, pruritic, oedematous wheals (hives) that resolve within 24 hours without le...
Vesicle
A small, fluid-filled blister measuring less than 5 mm in diameter, representing a primary skin lesion.
Wheal
A transient, oedematous, raised skin lesion characteristic of urticaria, caused by localised dermal oedema, typically pa...
Wood's Lamp Examination
A diagnostic procedure in which long-wave ultraviolet (UVA) light (~365 nm) is used to illuminate the skin in a darkened...
Xeroderma
Abnormal dryness of the skin, resulting from reduced sebaceous and sweat gland activity or impaired barrier function.
Xeroderma Pigmentosum
A rare autosomal recessive disorder characterised by extreme UV sensitivity and a markedly elevated risk of skin maligna...