This is caused by the neurological damage caused by the methamphetamine entering the brain. Some addicts are initially aware that this suspicion is caused by the use of methamphetamine, and are uncertain about what they suspect, believing that their most loyal friends will not backstab them, and are in the midst of daily self-contradictions that can lead them to a bull’s eye. As the amount and frequency of methamphetamine use increases, the damage to the nerves intensifies and the addict gradually believes what he or she suspects, loses the ability to judge reality and becomes seriously paranoid that everyone around him or her is harming him or her, including relatives and friends, and then the patient becomes violent in a very panicked mood. It was only then that the family realized the seriousness of the patient’s condition and tried to send him to the hospital for treatment.