Sensory overload

Sensory overload is a common issue for people that have autism, and may make it difficult for them to travel to busy and loud places such as the mall, convenience stores, or festivals. Sensory overload occurs when one or more of the body’s senses experiences over stimulation from the environment. When faced with an environment that may cause you to feel overloaded, it triggers a fight or flight response. You either explode into a temper tantrum or your brain shuts down because it is too overwhelmed.
When I was younger I suffered from frequent panic attacks when travelling on public transport. They were horrible. I could feel them building up. My foot would start tapping and I would hyperventilate. My arms would start to ache. With hindsight it was probably my body's reaction to sensory overload.
I am not comfortable in most crowded places. When I go to the supermarket I am edgy, and dash round as quickly as possible so as to be able to leave. I find the other shoppers' behaviour and proximity very challenging. I am uncomfortable at concerts, because of the number of people who attend. When I go to the pub I tend to clam up if there are lots of people talking. I hear everything yet hear nothing, except for the hubbub. I tend to have what some of my family call a 'Cliff moment'.
I know why Cunt the First has bothered me so much. It's where he's in your face the whole time and never stops talking. He ignores the fact that you have told him you wish to be quiet. I have suddenly exploded at him a few times, after having had to listen to his hours-long monologues. I have meltdowns afterwards and it takes some days to start feeling 'normal' again.
The top picture represents the build-up, and the bottom picture represents the aftermath of the experience.