Which skin condition contraindicates body treatments that cause heat and vasodilation?

The skin condition that contraindicates body treatments causing heat and vasodilation is psoriasis. This chronic autoimmune condition leads to the rapid growth of skin cells, resulting in scaling and inflammation. Treatments that create heat or increase blood flow can exacerbate the symptoms of psoriasis, potentially leading to flare-ups or worsening the existing lesions.

In the context of psoriasis, the application of heat can increase inflammation and irritation on the already sensitive, inflamed skin. Therefore, practitioners must avoid such treatments to prevent aggravating the condition and ensure the comfort and safety of the client.

While other conditions like dermatitis could also be sensitive to heat, psoriasis specifically demonstrates a stronger reaction to heat due to its underlying pathology and the inflammatory nature of the skin cells involved.