Dermatitis and eczematous disorders - PowerPoint PPT Presentation

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Dermatitis and eczematous disorders

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  1. Dermatitisand eczematous disorders Dr. AbdulmajeedAlajlan Associate Professor Consultant Dermatologist & Laser surgeon Department of Dermatology- KSU

  2. 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

  3. Eczema • Definition: inflammation of the skin • Ezema vs. dermatitis

  4. Eczema • Classification: • Types of classification • Benefit of classification

  5. Eczema • Acute eczema: erosion, oozing and vesicles

  6. Eczema • Chronic eczema: lichenification, drak pigmentation and thick papules and plaques

  7. Contact Dermatitis

  8. Contact Dermatitis • Definition: dermatitis results from contact with external materials

  9. 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

  10. Contact Dermatitis • Clinical features • Prediliction sites: • Distribution & configuration

  11. Contact Dermatitis • Management: • Identification • Patch testing: for allergic contact dermatitis not for irritant • Avoidance measures • Topical corticosteroids

  12. Atopic Dermatitis

  13. 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!

  14. Atopic Dermatitis • Pathogenesis: • “Atopy”: genetic predisposition • Dry skin (decrease production of moisturizing lipids; sebum) • IgE ? (Epiphenomenon) • T-Cell • Allergy, increased tendency to certain allergens

  15. Atopic Dermatitis • Clinical Variants: • Infantile AD • Childhood AD • Adult AD

  16. Atopic Dermatits • Infantile AD: • Distribution • Presentation • Behaviour

  17. Atopic Dermatits • Childhood AD: • Distribution • Presentation • Behaviour

  18. Atopic Dermatits • Adult AD: • Distribution • Presentation • Behaviour

  19. Erythroderma: is a very rare complication of atopic dermatitis

  20. Atopic Dermatits • Complications: • Secondary infections • Eczema herpeticum • Growth retardation • psychological

  21. Cellulitis

  22. Impitigo: Bacterial infection

  23. Eczema Herpiticum is a serious complicaiton that needs admission and systemic antiviral

  24. Atopic Dermatits • Investigations: • ????????

  25. 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

  26. Atopic Dermatits • AD and Food! minor role

  27. Seborrhoeic Dermatitis

  28. Seborrhoeic Dermatits • Definition:

  29. Seborrhoeic Dermatits • Pathogenesis: • increased Sebum! • Tendency • Pityrosporumovale over growth

  30. Seborrhoeic Dermatits • Clinical features: • Presentation • Distribution

  31. Seborrhoeic Dermatits • Investigations: ????? • Resistant cases think of: Histocytosis (langerhans cell neoplasm)

  32. SeborrhoeicDermatits • Management: • Shampoo • Antigungals • Topicals • Combined therapy • Maintenance & recurrence

  33. 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