Which condition involves skin cells building up to form scales and itchy patches?

• A. Bacterial infection
• B. Psoriasis
• C. Fungal infection
• D. Viral infection

Answer: (B)

Psoriasis is a condition where skin cells multiply much faster than normal, causing the surface to thicken into itchy, scaly patches. Normally skin cells shed and are renewed about every month, but in psoriasis the turnover is much quicker, so cells build up and form plaques with silvery scales. The itchiness and common locations like elbows, knees, and scalp help distinguish it from other issues. It’s not caused by an infection—bacteria, fungi, or viruses—so it isn’t contagious. Treatments focus on slowing skin cell production and reducing inflammation, using options like topical steroids, vitamin D analogs, phototherapy, or systemic medications for more severe cases.