Many people with severe anxiety and/or depression are also anti-authoritarians. Often a major pain of their lives that fuels their anxiety and/or depression is fear that their contempt for illegitimate authorities will cause them to be financially and socially marginalized, but they fear that compliance with such illegitimate authorities will cause them existential death.
It has been my experience that many anti-authoritarians labeled with psychiatric diagnoses usually don’t reject all authorities, simply those they’ve assessed to be illegitimate ones, which just happens to be a great deal of society’s authorities.
Bruce E. Levine is a clinical psychologist and author of Get Up, Stand Up: Uniting Populists, Energizing the Defeated, and Battling the Corporate Elite (Chelsea Green, 2011).
http://www.alternet.org/health/154225/would_we_have_drugged_up_einstein_how_anti-authoritarianism_is_deemed_a_mental_health_problem?page=entire