The belief in jinn possession is embedded in the Muslim faith. A previous quantitative
study had identified symptoms of jinn possession. It shows that there are overlapping symptoms between jinn possession and mental disorders, leading to different diagnoses. An exploratory study was done to investigate the possibility of jinn possession amongst patients who have already been diagnosed with schizophrenia, bipolar disorder and epilepsy using four case studies. All the patients have at least five significant symptoms of jinn possession and were on medication for their  respective mental disorders. Thermal images of the patients were recorded using a
thermal imaging camera to monitor temperature change before and after ruqyah. The thermal images before and after ruqyah were compared, and it was observed that parts of the body temperature for all four patients became hotter after ruqyah, indicating that all of them have jinn possession. This reaction to ruqyah is considered as a sign of jinn possession by ruqyah practitioners. It is possible that some of those who have been diagnosed with mental disorders may also have an underlying jinn possession issue. Using ruqyah as a complementary therapy on this category of patients may bring better therapeutic benefits. Further studies need to be conducted to identify the extent of jinn possession amongst those with mental disorders. The
symptoms of jinn possession can be used as a guide for identifying possible cases of jinn possession amongst those with mental disorders.

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