Medicine & USMLE

Oral Stage

Freud Psychosexual Development
  1. Oral Stage
  2. Anal Stage
  3. Phallic Stage
  4. Latency Stage
  5. Genital Stage


The Oral Stage is the 1st stage of Freudian psychosexual development, and is exhibited by infants between 0 and 1 years of age. The mouth is the primary erogenous zone and leads to urges like sucking and biting.

Key Points

  • Oral Stage
    • Erogenous zone: mouth
    • Age: 1st year of life (0-1)
    • Urges: sucking/biting
      • Fixation may lead to persistent oral urges (e.g. sucking on thumb, biting nails)