If the erythema ab igne lesions demonstrate pre-cancerous changes, the use of 5-fluorouracil cream has been recommended. Abnormally pigmented skin may persist for years. Treatment with topical tretinoin or laser treatment may improve the appearance. Epidemiology
Erythema ab igne was once commonly seen in the elderly who stood or sat closely to open fires or electric heaters; however, erythema ab igne has been reported in both young and elderly individuals. Women have a higher incidence of erythema ab igne than men. Although wide use of central heating has reduced the overall incidence of erythema ab igne, it is still sometimes found in people exposed to heat from other sources such as heating pads, space heaters, hot water bottles, and electronic devices. References
External links

DermNet vascular/erythema-ab-igneNew England Journal of Medicine Image Challenge
A neuroma (; plural: neuromata or neuromas) is a growth or tumor of nerve tissue. Neuromas tend to be benign (i.e. not cancerous); many nerve tumors, including those that are commonly malignant, are nowadays referred to by other terms. Neuromas can arise from different types of nervous tissue, including the nerve fibers and their myelin sheath, as in the case of genuine neoplasms (growths) like ganglioneuromas and neurinomas. The term is also used to refer to any swelling of a nerve, even in the absence of abnormal cell growth. In particular, traumatic neuroma results from trauma to a nerve, often during a surgical procedure. Mortons neuroma affects the foot. Neuromas can be painful, or sometimes, as in the case of acoustic neuromas, can give rise to other symptoms. Neoplasms
Acoustic neuroma -  a slow-growing,  benign tumor of the  acoustic nerve. Symptoms, which most often start after the age of 30, can include dizziness, headache, vertigo, loss of balance, ringing sensations, and numbness. Ganglioneuroma - a tumor of the sympathetic nerve fibers arising from neural crest cells. Pacinian neuroma - a very rare, painful, benign hyperplastic tumor of Pacinian corpuscles (mechanoreceptors responsible for sensitivity to vibration and pressure), sometimes linked to a history of local trauma. Other nerve swellings
Some of the benign varieties of neuroma, in the broadest sense of the term, are  not neoplasms. Traumatic neuroma follows different forms of nerve injury (often as a result of surgery).