Psychologist vs psychiatrist: what's the difference?
A psychiatrist is a medical doctor (MD/DO) who diagnoses mental-health conditions and prescribes medication; some also do therapy. A psychologist holds a doctorate in psychology (PhD/PsyD), provides therapy and psychological testing, and in most states does not prescribe. Many people see both — a therapist for ongoing therapy and a prescriber for medication.
The core difference is prescribing
Psychiatrists go to medical school and can prescribe and manage psychiatric medication. Psychologists are trained in therapy and assessment, not medicine, and generally cannot prescribe (a few states allow specially-trained prescribing psychologists). A psychiatric nurse practitioner (PMHNP) is another prescriber option.
Who to start with
If your main need is talk therapy, start with a therapist (psychologist, LPC, LCSW, or LMFT). If you think medication may help, or you have a complex diagnosis, a psychiatrist or PMHNP can evaluate that. The two roles often work together rather than being either/or.
Common questions
Can a psychologist prescribe medication?
In most states, no — psychologists provide therapy and testing, not medication. A few states license specially-trained prescribing psychologists, but the usual prescribers are psychiatrists and psychiatric nurse practitioners (PMHNPs).
Do I need both a psychologist and a psychiatrist?
Sometimes. Many people see a therapist for regular sessions and, separately, a prescriber for medication management. Others need only one. A first conversation with either can help clarify what fits.