EXOGENOUS AGENTS
Irritant contact dermatitis – axillary dermatitis from deodorant
sticks; irritant diaper (napkin) dermatitis, peristomal and perianal
dermatitis
Textbook of Neonatal Dermatology, p.251, 2001;
Rook p.729, 1998, Sixth Edition
INFECTIONS AND/OR INFESTATIONS
Amebiasis – phagedenic necrosis, fistulae,
pseudoelephantiasis; granulomas, condylomatous masses
Dermatol Trop 2:129–136, 1963
Botryomycosis
JAAD 9:428–434, 1983
Candidiasis – flexural candidiasis
Rook p.1342,3212, 1998,
Sixth Edition; Clin Obstet Gynecol 24:407–438, 1981; diaper
dermatitis
Textbook of Neonatal Dermatology, p.252, 2001;
erosio interdigitalis blastomycetica and chronic mucocutaneous
candidiasis; multiple entities can show changes of chronic
mucocutaneous candidiasis including Nezelof syndrome,
Swiss-type agammaglobulinemia, DiGeorge’s syndrome,
hyper-IgE syndrome, mucoepithelial dysplasia
Chancroid resembling granuloma inguinale
Condyloma acuminata
Cytomegalovirus diaper dermatitis – a cause of perineal
ulcers and diaper dermatitis
AD 127:396–398, 1991;
JAAD 24:857–863, 1991
Dermatophilus congolensis – due to contact with infected
animals
BJD 145:170–171, 2001
Dermatophytosis – tinea corporis, tinea cruris –
Trichophyton
rubrum, Epidermophyton floccosum Semin Dermatol
4:185–200, 1985; tinea pedis – bullous Rook
p.1300–1301,1309, 1998, Sixth Edition; Trichophyton rubrum
and
Epidermophyton diaper dermatitis Clin Ped 26:149–151,
1987; Trichophyton verrucosum (zoophilic fungus of cattle)
diaper dermatitis
Ped Derm 10:368–369, 1993
Diphtheria – superficial round ulcer with overhanging edge; gray
adherent membrane; later edge thickens and becomes raised
and rolled; umbilicus, post-auricular, groin, finger or toe web;
heals with scarring; crusts around nose and mouth with faucial
diphtheria
Schweiz Rundsch Med Prax 87:1188–1190, 1998;
Postgrad Med J 72:619–620, 1996; Am J Epidemiol
102:179–184, 1975
Enterobiasis (
Enterobius vermicularis) – perineal intertrigo
Rook p.1390, 1998, Sixth Edition
Erythrasma – intertriginous and perigenital;
Corynebacterium
minutissimum; red to brown irregularly shaped and sharply
marginated scaly and slightly creased patches of groin, axillae,
intergluteal, submammary flexures, toe webs; coral-red
fluorescence with Wood’s light examination due to
coproporphyrin; toe clefts are most frequent location; acanthosis
nigricans and normal follicular openings of face and trunk may
show coral pink fluorescence
Rev Infect Dis 4:1220–1235, 1982
Gram-negative web space infections
Caputo p.140–141, 2000
Granuloma inguinale Rook p.3168, 1998, Sixth Edition
Hand, foot and mouth disease – diaper rash of hand foot and
mouth disease
Dialogues in Dermatol, Nov. 2001
Herpes simplex infection
Rook p.3168, 1998, Sixth Edition;
linear intertrigo
HTLV-1 infection – infective dermatitis of scalp, eyelid margins,
perinasal skin, retro-auricular areas, axillae, groin; generalized
papular dermatitis
Lancet 336:1345–1347, 1990; BJD
79:229–236, 1967; BJD 78:93–100, 1966
Impetigo contagiosa
Mycobacterium haemophilum – inguinal ulcer AD 138:229–230,
2002
Mycobacterium tuberculosis – tuberculosis verrucosa cutis
Rook p.3168, 1998, Sixth Edition; periorificial tuberculosis
JAAD 51:492–493, 2003
North American blastomycosis
Rook p.3168, 1998, Sixth Edition
Parvovirus B19 infection – accentuation in folds
Pediculosis
Pseudomonas – toe web space maceration and ulceration
AD 107:71–74, 1973
Recurrent toxin-mediated perineal erythema – associated
with pharyngitis due to
Staphylococcus aureus or Streptococcus
pyogenes AD 132:57060, 1996
Scabies
Scarlet fever – perigenital dermatitis
Schistosomiasis – phagedenic necrosis, fistulae,
pseudoelephantiasis; granulomas, condylomatous masses
Rook p.3166, 1998, Sixth Edition
Seabather’s eruption – on Long Island, causative organism
is the planula larvae of the sea anemone
Edwardsiella lineata;
in Florida, planula larvae of the jellyfish
Linuche unguiculata
JAAD 30:269–270, 1994; NEJM 329:542–544, 1993
Staphylococcus aureus pustulosis (folliculitis)
Streptococcal intertrigo – neck in chubby babies
Pediatrics
112:1427–1429, 2003; post-auricular area, groin, perianal
cellulitis
BJD 74:323–325, 1962
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