Psoriasis can often resemble other skin conditions, making it important to know the signs and seek medical help early when necessary. How psoriasis mimics other conditions on scalp, nails, and palms; importance of early, personalized medical evaluation. World Psoriasis Day 2025 theme is 'Look Beyond My Skin'. Know what psoriasis is, why it's not contagious, its link to arthritis & new biologic treatments by Dr.