Some articles on avoidant:

Avoidant Personality Disorder - History
... The avoidant personality has been described in several sources as far back as the early 1900s, although it was not so named for some time ... Swiss psychiatrist Eugen Bleuler described patients who exhibited signs of avoidant personality disorder in his 1911 work Dementia Praecox Or the Group of Schizophrenias ... Avoidant and schizoid patterns were frequently confused or referred to synonymously until Kretschmer (1921), in providing the first relatively complete description, developed a distinction ...