Just like other sensations, we all have different reactions to touch. For example, some people may enjoy a light touch, like being tickled by a feather, while others may find it uncomfortable.
During human history, light touch became associated with danger. The sensation of this can simulate a snake brushing against an ankle or walking into a spider web. Light touch became our protective measure; a warning against danger.
Touch could also be deep pressure. The comfort of a hug or weighted blanket can simulate the feeling of being in the womb. For many children, this is soothing to their nervous systems.
Our skin is the bigest organ in our body. It not only processes tactile input it recieves from our environment, but it also gains information from:
Tactile input helps our children determine the edges of their body. Touch increases body awareness as we grow. Improving our children's ability to successfully navigate the environment.
Resources:
https://www.griffinot.com/touch-sense-sensory-processing/
Living Sensationally by Dr. Winnie Dunn