This section is used for finding why they got admitted/came into clinic. You then ask a relevant history; for example, a patient who came in feeling "a bit low", you ask about sleep disturbance, loss of interest in activites, precipitating factors, etc - screening for other symptoms of depression.
It is very important, regardless of what condition, to ask about suicide; failure to do so can fail you an osce!
Past Psychiatric History
Next, ask about previous episodes of their illness, and of other psychiatric conditions.
Rather than saying "have you ever had any other psychiatric problems?", try things like "have you ever been admitted to hospital before?", or "have you ever seen your GP about anything?".
Have they ever been sectioned under the Mental Health Act?
Past Medical History
Again, ask questions about previous consultations with health professionals, since patient memory can be bad at remembering previous illness.
See if there is any history psychiatric illness in the family.
This section is basically a "tell me about your life" bit. It lets you get a picture of the patient as a person.
Ask about problems in pregnancy or birth. Go through to early childhood and developmental milestones ("did you start walking and talking at normal ages", etc).
Ask how school was, any problems they had, did they have lots of friends, get bullied. Ask when they left, did they go to college/uni. Why did they leave, did they start working?
Cover job history, did they have high job turnover, long periods of unemployment?
Sex & Relationships
Did they ever have any 'unwanted' sexual experiences? (rape, abuse, etc). Have they been able to form good relationships with friends, family, partners. How long has their longest relationship been? Howmany sexual partners you had in the past one year?
Medication & Allergies
Focus on previous psychiatric medications, since this will also help highlight gaps in the previous psychiatric history above.
Do they drink? If so, use the alcohol screening tools.
Any illegal drugs; if so, what types, how much and how long for.
Have they ever been in trouble with the police, or spent time in prison?