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Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... • Pustules < 5-10 ... to inflammatory skin ... skin disease in ... #Skin #Lesions
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
Pustular Skin Rash ... Folliculitis - Pustules ... • Impetigo - Pustules ... with satellite pustules ... periphery #Pustular
Fluid-filled Rash - Diagnostic Algorithm.  Pustule: 1) Pustules more commonly suggest an infectious process (bacterial,
Pustule: 1) Pustules ... proteins in the skin ... FluidFilled #Vesciular #Pustular
Reactive Arthritis
 • Inflammation of joints (commonly large joints)
    - Asymmetric Oligoarthritis: Joint
Transient • Skin ... erythema and erosive pustules ... Blenorrhagicum - pustular
Pathergy Summary Overview

What is pathergy?
Pathergy is an exaggerated skin injury occurring after minor trauma such as
an exaggerated skin ... papules or sterile pustules ... Atypical eosinophilic pustular ... What is the skin ... (papule) - Pustule
Dematoses in Pregnancy - Specific Skin Conditions
Non-Pruritic
 • Pustular psoriasis of pregnancy
 • Impetigo Herpetiformis
Pruritic -
Pregnancy - Specific Skin ... Non-Pruritic • Pustular ... - Non-Primary Skin ... Pruritic - Primary Skin
Severe Drug Rashes - Comparison - DRESS | SJS/TEN | AGEP | Erythroderma

DRESS 
 - Onset:
morbilliform eruption, pustules ... Facial edema, pustules ... >90% of total skin
Primary Dermatological Lesions
Primary lesions are physical changes in the skin considered to be caused directly by
changes in the skin ... infestation of the skin ... PUSTULE: circumscribed ... sterile (as in pustular ... injury to the skin
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
Sun-exposed areas - Skin-colored ... on sun-damaged skin ... dimpling of overlying skin ... Acrochordons (skin ... differential #diagnosis #skin
SAPHO Syndrome Summary

What?
SAPHO syndrome is a rare chronic inflammatory disorder of bone, joint, and skin characterized
bone, joint, and skin ... • Pustular skin ... dermatoses • Skin ... suppurativa, palmar pustular ... pustulosis, pustular