It can be found in Vault 19's clinic.
Male, Age: 31
1687865 often misinterprets other's actions as hostile. He perceives friendly interactions with nurses as patronizing. We've also noticed that the longer other patients remain in contact with 1687865 the more readily they are to act aggressively towards him (due to 1687865's defensive nature) thus reinforcing 1687865's perceived hostility.