Acneform Eruption Resulting From Antibiotic Administration

Steroid acne vs. Pityrosporumfolliculitis: the incidence ofPityrosporum ovaleand the effect of antifungal drugs in steroid acne

“…As a type of folliculitis, steroid acne can result from corticosteroid preparations; 5–7 it is distinct from true acne in that the skin lesions tend to be monomorphous, the scalp is frequently involved, scars, nodules, cysts, and comedones are rare, and itching and postinflammatory hyperpigmentations are common. 5 , 8 Pityrosporum folliculitis has been acknowledged as a real entity by many authors only recently; 2 , 9–14 its skin lesions are similar to those of steroid acne. Despite certain clinical similarities, few reports have investigated the relation between steroid acne and Pityrosporum folliculitis.…”

“… 9 In this article, an acneiform eruption resulting from an administration of a broad‐spectrum antibiotic was reported to be closely associated with P. ovale . 10 In 1973, Potter et al . 11 reported seven cases consistent with Pityrosporum folliculitis clinically and histopathologically, and suggested that the disease was a common entity frequently misdiagnosed as acne.…”

The Epidemiology of Malassezia (Pityrosporon) Folliculitis in Singapore

“…M alassezia furfur {Pityrosporor] orbiculare and P. ovale) has an established etiologic role in pityriasis versicolor'^ and has been implicated in the etiology of seborrheic dermatitis^" and Matassezia {Pityrosporon) foUiculitis. '^"^ Its role in Malassezia foUiculitis was first suggested by Weary et al in 1969, wbo reported a patient who developed an acneiform eruption after taking a broad-spectrum antibiotic.^ Since then, there have been other reports of Malassezia foUiculitis in patients with underlying diseases like diabetes mellitus, ^' granuloma annulare, and alopecia areata," as well as in patients receiving anticonvulsants^ and corticosteroids/-'" In some patients, however, none of these were present.^"' Although there have been several reports of Malassezia foUiculitis from the West, we are not aware of any studies conducted in the tropics, where pityriasis versicolor is a common dermatosis." Furthermore, we suspect that there are probably other contributing or predisposing factors that played a part in the pathogenesis of Malassezia foUiculitis.…”

Actinic superficial folliculitis; a new entity?

“…Bockhardt's impetigo could also be excluded on the basis of the negative bacterial cultures. Folliculitis caused by Pityrosporon (Weary, Russell & Butler, 1969) had to be rejected owing to the absence of that organism from most of the smears.…”