A neuroma /njuːˈroʊmə/ (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.
Morton's neuroma affects the foot. Neuromas can be painful, or sometimes, as in the case of acoustic neuromas, they can give rise to other symptoms.