Dermatitis and Psoriasis: Skin Inflammatory Disorders

📋 Course Outline

1. Pruritus Causes
2. Eczema Types
3. Atopic Dermatitis
4. Contact Dermatitis
5. Seborrheic Dermatitis
6. Psoriasis Pathogenesis
7. Psoriasis Subtypes
8. Pityriasis Rosea
9. Lichen Planus

📖 1. Pruritus Causes

🔑 Key Concepts & Definitions

• Pruritus: An unpleasant sensation that provokes the desire to scratch, often associated with skin or systemic conditions.
• Xerosis (Dryness): The most common cause of pruritus, characterized by dry, rough, and scaly skin, leading to itchiness.
• Primary Skin Diseases: Skin conditions directly causing pruritus, including inflammatory, infectious, or infestational dermatoses such as eczema, psoriasis, or scabies.
• Systemic Causes: Underlying internal diseases that manifest with pruritus, including liver, kidney, thyroid diseases, infections, malignancies, and neuropsychiatric disorders.
• Eczema (Dermatitis): An inflammatory skin disease marked by pruritus, redness, and skin changes, classified as acute or chronic.
• Contact Dermatitis: Skin inflammation resulting from contact with external irritants or allergens, presenting as eczematous plaques or vesicles.

📝 Essential Points