Totally normal for me. I have ADD and suspect I have related sensory processing issues. It has become a lot worse in recent years as I am dealing with shock, grief and anxiety. Crowds, for example, are tough. However, all my life, I have been sensitive to noise and light. I've never fallen asleep in front of a TV, for example. I've rarely been able to sleep with a light on. I cannot handle talk back radio or radio commentary - they're too discordant for me.