Etiology and pathogenesis
Internal factors External factors Hereditary tendency
eczema
Etiology and pathogenesis
Internal factors External factors
• chronic infection • block of blood circulation • change of endocrine and
Subacute eczema
• relieve from the above symptoms
• colors of eruption become dark
• scales • touch allergic things
again, acute condition will appear repeatedly • become chronic eczema
Acute
Subacute
Chronic
Subacute
Chronczema
• Intensely itching • Primary and multiform
lesions • The boundary is not
clear • Place symmetrically,
•Eruption place symmetrically
•Easy to recur and chronic
•Etiology-clear
•Lesion simple boundary clear
•Eruption place on only contact areas
•Self-limited, eliminating contact factors can be cured
metabolism
Hereditary tendency
Etiology and pathogenesis
Internal factors External factors Hereditary tendency
eczema
IgE
Clinical Manifestations
What are the symptoms of acute, subacute and chronic eczema?
Primary and multiform Erythema, papulovesicle, exudation, erosion
Acute eczema
• Intensely itching • Primary and multiform
lesions • The boundary is not clear • Place symmetrically,
Diagnosis
• primary and multiform lesions • easy to exudation when irritated by many factors • eruption symmetrically distribution • easy to recur • usually severe pruritus • Lichenification in chronic case
ECZEMA 湿疹
1
Definition
2
Etiology and pathogenesis
3
Clinical manifestations
4 Diagnosis and differential diagnosis
5
Treatment
Definition
• Eczema = Ekzein, “boil out”
Chronic eczema
• always coming from acute or subacute eczema
• the lesions become thicken, rough and concomitance with pigmentation or depigmentation
• This condition can keep for a few months or years
mostly on exposed areas • Infection
Place symmetrically, appear anywhere on the body, mostly on the face, neck, elbows, wrists, breast, scrotum, backs of the knees and ankle.
Differential diagnosis
Acute Eczema
Contact Dermatitis
Differential diagnosis
Eczema
Contact dermatitis
•Etiology-not clear
•Lesion multiform, boundary not clear
• “pruritic papulovesicular process, which in its acute phase is associated with erythema and edema and which in its chronic phase, while retaining its papulovesicular feature, is dominated by thickening, lichenification and scaling.”
mostly on exposed areas • Infection
Acute eczema
• Intensely itching • Primary and multiform
lesions • The boundary is not clear • Place symmetrically,
mostly on exposed areas • Infection
Treatment
General therapy
Topic therapy
Systemic therapy