👉 In the context of psychology and neuroscience, a twitch is an involuntary muscle contraction that occurs when someone experiences pain or discomfort. These contractions can be triggered by various stimuli such as physical injury, emotional distress, sensory overload, or even the release of neurotransmitters in the brain. The term "twitches" comes from the Latin word "twitcha," which means "to move irregularly." This specific type of twitch is often associated with neurological conditions like multiple sclerosis and epilepsy,