<prompt> Malignant change in nevus is characterised by?DarkeningHemorrhageItchingAll  <response>: Ans. is c i.e., Itching Warning size of melanoma are : ? i Itching or pain in a pre-existing mole. ii Enlargement of a pre-existign lesion. iii Irregularity of the borders of a pigmented lesion. iv Variegation of color within a pigmented lesion. v Assymetry of lesions. 