Psoriasis is more than a skin condition—it’s an autoimmune disorder in which the life-cycle of skin cells accelerates, causing rapid buildup on the skin surface, leading to red, scaly patches, inflammation, and sometimes crumbling nails. The Mayo Clinic describes it as a rash with itchy, scaly patches most commonly appearing on the knees, elbows, trunk, and scalp. Globally, it affects about 2–3 % of people (which translates to more than 100 million worldwide) and roughly 7–8 million in the U.S. according to recent estimates.  Genetic predisposition and environmental triggers both play key roles in its development.

There are several distinct types of psoriasis, each with unique characteristics. The most common is plaque psoriasis, marked by thick, raised patches with silvery scales (affecting some 80-90 % of psoriatic patients). Other types include guttate (small, drop-like spots often triggered by infections), inverse (smooth red patches in skin folds like the groin or under breasts), pustular (rare, with pus-filled blisters), and erythrodermic (very rare, covering large areas with peeling and intense redness). Psoriasis may also affect the nails—causing pitting, discoloration, thickening, and sometimes separation from the nail bed—which can be a sign of progression or risk of psoriatic arthritis.

The impact of psoriasis goes beyond visible skin symptoms: it can interfere with sleep, concentration, work productivity, and overall health. Because it’s systemic (immune-mediated) it’s linked to other serious conditions, such as psoriatic arthritis, cardiovascular issues, diabetes, and obesity. While there’s no cure, early recognition and proper management—including lifestyle habits, diet, stress control, and medical therapies—can help reduce symptoms, improve comfort, and protect overall well-being. If you notice signs of any form of psoriasis—especially on skin or nails—it’s wise to consult a dermatologist for diagnosis and tailored care.