Conclusions: Flush response to skin niacin is more impaired in schizophrenia patients as well as their relatives from families with higher loading for schizophrenia.

• 结论：来自多发性家庭之精神分裂症病人及其无病亲属有较高之家庭负荷，同时菸碱酸皮肤贴片红肿反应亦更为异常。