What skin condition lasts a lifetime?

Psoriasis is a chronic autoimmune skin condition that typically lasts a lifetime. It is characterized by the rapid growth of skin cells leading to thick, scaly patches on the skin. These patches can be itchy and sometimes painful, commonly appearing on the elbows, knees, scalp, and back. The condition is influenced by various factors, including genetics and environmental triggers, and while it can go through cycles of flares and remissions, there is currently no cure, which is why it is considered a long-lasting condition.

In contrast, dermatitis and eczema, while they can be persistent, are often more manageable and may resolve completely with appropriate treatment or in response to avoiding triggers. Alopecia, on the other hand, refers to hair loss which can be temporary or permanent depending on its type (for example, alopecia areata may resolve itself spontaneously). Thus, psoriasis stands out as the skin condition mentioned in the question that continues throughout a person's life.