While PSP Airport does not have a sensory room, a nursing room is located post-security on the way to the Agua Caliente Concourse (Gates 12-20) - this room may provide a quiet area that may be relevant for some individuals. [1]
Image Credit for Cover Photo of Airport: ‣
[1] https://flypsp.com/shops-restaurants-amenities/?e-filter-8379ef1-shop-restaurant-category=amenities
Image Credit for Mothers Area: https://flypsp.com/shops-restaurants-amenities/?e-filter-8379ef1-shop-restaurant-category=amenities