The word derives from the Greek. The longest side of a right-angled triangle is called the hypotenuse which is why the hypotenuse is always the longest side of a right-angled triangle.
Medical Definition of neurodermatitis. plural. neurodermatitises. or. neurodermatititides. \-Ëtit-É-ËdÄz\play. : chronic eczematous dermatitis arising from repeated rubbing or scratching of a real or imagined irritation of the skinâsee lichen simplex chronicus.
Neurocutaneous syndromes (phakomatoses) are a group of genetic or congenital disorders in which abnormalities of the nervous system are associated with either cutaneous features, ocular features, or both. Because the cutaneous features produce a birthmark, the term phakomatoses, meaning mother spot applies to the group.