You searched for: “erythralgia
erythralgia, rodonalgia (s) (noun) (no pl)
In pathology, a mottled reddening of the skin, usually accompanied by throbbing pain: Erythralgia is a skin disorder characterized by a painful burning sensation, raised skin temperature, and redness, generally of the lower limbs.

Erythralgia exhibits a redness of the skin, especially of the extremities, with burning pain, and increased skin temperature.