Abstract OBJECTIVE: Erythromelalgia is a rare disorder associated with neuropathic pain that commonly affects the lower extremities.
[ncbi.nlm.nih.gov]
When the extremity is lowered, or heat is applied, the pain is intensified.
[ncbi.nlm.nih.gov]
[…] in which blood vessels, usually in the lower extremities or hands, are episodically blocked (frequently on and off daily), then become hyperemic and inflamed.
[dbpedia.org]