临床精神病学的检查和诊断与其它临床各科相比 ,有其特殊性和困难性 ,而司法精神病学鉴定则更有其特殊性和困难性。1　生物学依据欠缺医生在没有生物学依据的情况下做出精神疾病的诊断 ,而司法鉴定涉及原被告双方。如果被鉴定人不是典型的、公认的精神病人 ,结论往往使被鉴定人 Clinical psychiatric examination and diagnosis compared with other clinical departments have their own particularities and difficulties, and forensic psychiatric identification is more particular and difficult. 1 biological basis lack of doctors in the absence of biological evidence to make the diagnosis of mental illness, and forensic experts involved the original defendants on both sides. If the appraised person is not typical, recognized as a mental patient, the conclusions tend to be appraised