Fig. 24.1 Dusky red discoloration with trunkal involvement that is often seen early in TEN. Early desqumation is starting over lower abdominal panniculus. Reaction was to Bactrim Early cutaneous findings…
Fig. 34.1 Severe dryness and fissuring of lips and nose in a patient on isotretinoin Fig. 34.2 Xerotic skin with reticulate fissuring seen in asteatotic dermatitis over the ankle in…
Phototoxicity Photoallergy Incidence High Low Amount of agent required for photosensitivity Large Small Onset after exposure to photosensitizer and light Minutes to hours 24 h or more Occurs after…
Fig. 15.1 Primary lesions Secondary Lesions Comedones and cysts can arise secondary to inflammatory papules and pustules but are often not present. Pits and scars are evident in severe cases….
Fig. 28.1 Symmetric, erythematous morbilliform drug reaction in a patient with DRESS syndrome Drug is high risk, such as an aromatic AED Fever Liver abnormalities or other organ involvement Leukocyte…
Diseases commonly associated with or preceding erythroderma a Dermatologic diseases Psoriasis Atopic dermatitis Pityriasis rubra pilaris Contact and other types of dermatitis Dermatophytosis Ichthyosis Pemphigus foliaceus Systemic diseases Lymphoma: CTCL,…
Most potent phenol and catechol derivatives Non-phenolic/catecholic agents Hydroquinone Mercury Monobenzyl ether of hydroquinone Arsenic p-tert-Butylchatechol Cinnamic aldehyde p-tert-Butylphenol p-phenylenediamine (PPD) p-tert-Amylphenol Benzyl alcohol – Azelaic acid – Corticosteroids –…
Fig. 5.1 A typical morbilliform drug eruption, with pink erythematous papules coalescing into larger plaques Fig. 5.2 Morbilliform drug eruption in an adult patient with pink erythematous papules coalescing into…
Drug-induced alopecia Idiopathic alopecia Temporal association of drug initiation and alopecia No association with initiation of drug Cessation of drug leads to recovery and restoration of hairs and reversion of…
Fig. 19.1 This is true cutaneous lymphoma—erythematous papules in the groin. Clinical clues it is a true lymphoma are that the lesions are multiple, chronic, and on non-sun-exposed skin. The…
