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Dermatitis and eczematous disorders. Dr. Abdulmajeed Alajlan Associate Professor Consultant Dermatologist & Laser surgeon Department of Dermatology- KSU. Dermatitis. Objectives To know the definition & classification of Dermatitis/Eczema
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Dermatitisand eczematous disorders Dr. AbdulmajeedAlajlan Associate Professor Consultant Dermatologist & Laser surgeon Department of Dermatology- KSU
Dermatitis Objectives • To know the definition & classification of Dermatitis/Eczema • To recognize the primary presentation of different types of eczema • To understand the possible pathogenesis of each type of eczema • To know the scheme of managements lines
Eczema • Definition: inflammation of the skin • Ezema vs. dermatitis
Eczema • Classification: • Types of classification • Benefit of classification
Eczema • Acute eczema: erosion, oozing and vesicles
Eczema • Chronic eczema: lichenification, drak pigmentation and thick papules and plaques
Contact Dermatitis • Definition: dermatitis results from contact with external materials
Contact Dermatitis • Pathogenesis: • Irritant vs. allergic • Common irritants: detergent, acids, dust, burning chemicals, etc • Common allergens: perfumes, hair dyes, nickels, leathers, metals, rubbers, latex, cosmetics, etc
Contact Dermatitis • Clinical features • Prediliction sites: • Distribution & configuration
Contact Dermatitis • Management: • Identification • Patch testing: for allergic contact dermatitis not for irritant • Avoidance measures • Topical corticosteroids
Atopic Dermatits • Definition: chronic relapsing itchy skin disease in genetically predisposed patients. Associated diseases: bronchial asthma, allergic rhinitis, allergic congectivitis • Incidence: up to 15% in developed countries • Grow out tendency!
Atopic Dermatitis • Pathogenesis: • “Atopy”: genetic predisposition • Dry skin (decrease production of moisturizing lipids; sebum) • IgE ? (Epiphenomenon) • T-Cell • Allergy, increased tendency to certain allergens
Atopic Dermatitis • Clinical Variants: • Infantile AD • Childhood AD • Adult AD
Atopic Dermatits • Infantile AD: • Distribution • Presentation • Behaviour
Atopic Dermatits • Childhood AD: • Distribution • Presentation • Behaviour
Atopic Dermatits • Adult AD: • Distribution • Presentation • Behaviour
Erythroderma: is a very rare complication of atopic dermatitis
Atopic Dermatits • Complications: • Secondary infections • Eczema herpeticum • Growth retardation • psychological
Eczema Herpiticum is a serious complicaiton that needs admission and systemic antiviral
Atopic Dermatits • Investigations: • ????????
Atopic Dermatits • Management: • Education! Education! Education! • Support! • Skin care: moisturizing the skin • Topical therapy: (topical steroids, Tacrolimus, Pimecrolimus) • Phototherapy • Systemic therapy: steroids, Cyclosporin, Methotrexate, Azathioprine
Atopic Dermatits • AD and Food! minor role
Seborrhoeic Dermatits • Definition:
Seborrhoeic Dermatits • Pathogenesis: • increased Sebum! • Tendency • Pityrosporumovale over growth
Seborrhoeic Dermatits • Clinical features: • Presentation • Distribution
Seborrhoeic Dermatits • Investigations: ????? • Resistant cases think of: Histocytosis (langerhans cell neoplasm)
SeborrhoeicDermatits • Management: • Shampoo • Antigungals • Topicals • Combined therapy • Maintenance & recurrence
Dermatitis Objectives • To know the definition & classification of Dermatitis/Eczema • To recognize the primary presentation of different types of eczema • To understand the possible pathogenesis of each type of eczema • To know the scheme of managements lines