Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Timmen Cermak is an American psychiatrist known for his work on codependent personality types. He is in private practice in San Francisco and Marin County with a focus on addictions.
He proposed that codependency be listed as a personality disorder in the Diagnostic and Statistical Manual of Mental Disorders. Cermak reasoned that when specific personality traits become excessive and maladaptive and caused significant impairment in functioning or caused significant distress, it warrants a personality disorder diagnosis.