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Superficial Infections - Coggle Diagram
Superficial Infections
Impetigo
Pathogenesis
Minor trauma intraepidermal vesicle ruptures
Epidemiology
Seen in...
Children
Overcrowded conditions
Highly infectious
Causative organisms
Group A streptococci
Staph. aureus
Clinical Manifestations
Pyoderma
Serous exudate
Honey-colored crust
Diagnosis
Usually diagnosed clinically
Treatment
Usually resolve on their own
Short course of Flucloxacillin
Bullous impetigo
Exfoliative toxins A&B released by bacteria
Seen in neonates/small children
Caused by
Staph. aureus
Treatment
Flucloxacillin
Clindamycin
Staphylococcal Scalded Skin Syndrome
Exfoliative toxins A&B released by bacteria
Most severe manifestation
Seen in children
Clinical manifestations
Abrupt onset
Fever
Skin tenderness
Rash
Treatment
Flucloxacillin
Fluid replacement
Folliculitis
Epidemiology
Minor infection of hair follicles
Areas of friction/sweat activity
Axilla
Buttocks
Face/neck
Causative organisms
Staph. aureus
Pseudomonas aeruginosa
"Hot tub folliculitis"
Treatment
Usually no antibiotics required
Furuncle ("Boil")
Carbuncle
Epidemiology
Larger/deeper lesion of multiple furuncles
Seen on...
Back of neck
Face
Axilla
Buttocks
Caused by
Staph. aureus
Risk factors
Obesity
Diabetes
Steroids
Pathogenesis
Infection extends to subcutaneous layer
Treatment
Large lesions require surgical drainage
Antibiotics
Flucloxacillin
Clindamycin
Generally avoided
May self resolve
Epidemiology
Deep inflammatory nodule/abscess around hair follicle
Caused by
Staph. aureus
Pathogenesis
Developes from folliculitis
Erysipelas
Epidemiology
Acute infection of upper dermis and superficial lymphatics
Seen in...
Infants
Face and legs
Children
Elderly
Causative organisms
Staph. aureus
most often
Beta hemolytic streptococci
Clinical Manifestations
Painful
Erythematous, oedematous lesion
Sharply demarcated borders
"
Peau d'orange
Fever
Lymphadenopathy
Treatment
Penicillin
Anthrax
Epidemiology
Caused by
Bacillus anthracis
Cutaneous form
Raw wool/animal products contaminated with spores
Bioterrorism
Contaminated heroin
Also respiratory/GI anthrax
Fatal
Clinical Manifestations
Seen on...
Face
Any area of minor abrasion
Neck
Arms
Painless pruritic papule
"Malignant pustule" with surrounding edema
Haemorrhagic necrotic eschar
+/- Systemic features
Treatment
Penicillin
Ciprofloxacin
Doxycycline
