Schneiderman Prelims Vol-I. qxd

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A CLINICIAN’S GUIDE TO DERMATOLOGIC DIFFERENTIAL DIAGNOSIS, VOLUME 1
Schneiderman page 600-722.qxd 5/16/2006 6:51 PM Page 630

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Mycobacterium avium-intracellulare JAAD 39:493–495, 1998
Orf – Parapoxvirus (genus); Family Poxviridae 
Cutis
71:288–290, 2003; JAAD 44:1–14, 2001
Parvovirus B19 infection – erythema multiforme-like 
J Clin Inf
Dis 21:1424–1430, 1995
Psittacosis – erythema multiforme 
Br Med J 2:1469–1470, 1965
Rickettsial pox
Sealpox (parapoxvirus) – gray concentric nodule with
superimposed bulla on dorsum of hand 
BJD 152:791–793, 2005
Spider bites – black widow spider (
Latrodectus mactans) –
punctum with erythema and edema 
AD 123:41–43, 1987; brown
recluse spider (
Loxosceles reclusa) – erythema, edema, central
bulla; targetoid lesion with central blue/purple, ischemic halo,
outer rim of erythema; at 3–4 days central necrosis, eschar,
ulcer, scar 
South Med J 69:887–891, 1976
Syphilis – secondary – corymbose lesions; erythema
multiforme-like lesions 
BJD 149:658–660, 2003
Tick bite
Tick typhus (Boutonneuse fever, Kenya tick typhus, African and
Indian tick typhus) (ixodid ticks) – small ulcer at site of tick bite
(tache noire) – black necrotic center with red halo; pink
morbilliform eruption of forearms, then generalizes, involving
face, palms, and soles; may be hemorrhagic; recovery
uneventful 
JAAD 2:359–373, 1980
Tinea corporis, cruris, faciei, bullous tinea 
Cutis 6:661–668, 1970
Tinea imbricata
Toxic shock syndrome – targetoid spotty rashes 
Acta DV
82:449–452, 2002
Trichosporon beigelii sepsis
Tularemia – erythema multiforme 
JAAD 49:363–392, 2003
Varicella-zoster infection – varicella or herpes zoster; atypical
recurrent varicella with vesiculopapular lesions with central
necrosis 
JAAD 48:448–452, 2003
Verruca vulgaris – rosettes after cryotherapy 
Tyring p.286, 2002
Yaws – primary red papule, ulcerates, crusted; satellite papules;
become round ulcers, papillomatous or vegetative friable
nodules which bleed easily (raspberry-like) (framboesia);
heals with large atrophic scar with white center with dark halo
Rook p.1268–1271, 1998, Sixth Edition
Zygomycosis – 
Rhizopus arrhizus; bull’s eye infarct JAAD
51:996–1001, 2004; JAMA 2254:737–738, 1973