You would need to contact the CAA medical branch.
Their broad guidance is as follows:
Class 1
(a) Where there is suspicion or established evidence that an applicant has a psychological disorder, the applicant should be referred for psychological opinion and advice.
(b) Established evidence should be
verifiable information from an identifiable source which evokes doubts concerning the mental fitness or personality of a particular individual. Sources for this information can be accidents or incidents, problems in training or proficiency checks, delinquency or knowledge relevant to the safe exercise of the privileges of the applicable licence.
(c) The psychological evaluation may
include a collection of biographical data, the administration of aptitude as well as personality tests and psychological interview.
(d) The psychologist should submit a written report to the AME, AeMC or licensing authority as appropriate, detailing his/her opinion and recommendation
Class 2
Applicants with a psychological disorder may need to be referred for psychological or neuropsychiatric opinion and advice.