Early Intervention Service (EIS)

Under Review — this page was due to be reviewed by Thursday, 04 January 2024. The information shown here may be outdated.

The Early Intervention Service (EIS) is dedicated to the assessment and management of people who have presented to specialist mental health services with a first episode of psychosis.

EIS aims to give people the best chance of recovery after a first episode of psychosis and reduce the severity of relapses.

Eligibility Criteria


  • Between 14-64 years
  • Experiencing first episode of psychosis at least once a week (unless curtailed by treatment before week is up)
  • Period of psychosis accompanied by significant risk of decline in functioning
  • Not taking anti-psychotic medication for more than six weeks, unless this was started in the last three months
  • Period is not considered drug-induced (if client was initially well, then acutely unwell following drug use, then made rapid recovery)
  • Symptoms not wholly explicable in context of PTSD and/or Personality Disorder
  • Not eligible, if clear organic cause for their psychosis


Cannot be referred if:

  • Person has an established diagnosis of psychosis
  • Has been under another Early Intervention Service of three years or over

How to Refer

Early Intervention Service (EIS)

EMIS form

Referral methods: Email

Complete Early Intervention Service Referral Form - Camden & Islington referral form and send to camdeneis.duty@candi.nhs.uk

Where to find the form

  • Camden: Camden Global Documents > Mental Health

For second opinions or queries on referrals, contact the Camden Primary Care Mental Health Network. camden.MHCT@candi.nhs.uk

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Review date: Thursday, 04 January 2024