Intoxication refers to a state in which a person's mental and physical faculties are impaired due to the consumption of alcohol, drugs, or other substances. In legal contexts, intoxication can play a significant role as a defense in criminal cases, impacting a defendant's capacity to form the necessary intent to commit a crime. This can lead to distinctions between voluntary and involuntary intoxication, which affect how the law views responsibility for actions taken under the influence.