In simple words: Psoriasis vulgaris is a common, long-lasting skin condition that causes raised, red, scaly patches.These patches are often itchy and can appear on areas like elbows, knees, scalp, and lower back. It's caused by a problem with the immune system that speeds up skin cell growth. While there's no cure, treatments are available to manage symptoms.

A common, genetically determined, chronic inflammatory skin disease characterized by rounded, erythematous, dry, scaling patches. These lesions often affect the nails, scalp, genitalia, extensor surfaces, and the lumbosacral region. The underlying pathology involves accelerated epidermopoiesis.Psoriasis is associated with an increased risk of melanoma, squamous cell carcinoma, and basal cell carcinoma.

Example 1: A 32-year-old male presents with well-defined, erythematous plaques with silvery scales on his elbows and knees, consistent with psoriasis vulgaris., A 50-year-old female with a history of psoriasis vulgaris experiences an exacerbation of her symptoms due to stress, presenting with increased scaling and itching., A 25-year-old male develops small, drop-shaped, scaly lesions on his trunk and limbs following a streptococcal throat infection, characteristic of guttate psoriasis (L40.4), which can sometimes be difficult to distinguish from psoriasis vulgaris.

Documentation should include the location, size, and morphology of the skin lesions, the presence of nail changes, and any associated symptoms such as itching or joint pain.A detailed history including family history of psoriasis, triggering factors, and previous treatments should also be documented.