Synaesthesia is the neurological mixing of the senses. A synaesthete may for example hear[?]colours, see sounds, and taste tactile sensations. While this may happen in a person who has got autism, it is by no means exclusive to autistics.
... the age of 18, 7.5% from 18 to 24, 33.5% from 25 to 44, 23.9% from 45 to 64, and 6.9% who are 65 years of age or older. The median age is 34 years. For every 100 females ...