If the problem is due to external spirits, then it would be quite useless to seek help from physicians or psychotherapists. Other methods are necessary. One method is to drive away the spirit with another external force, such as a mantra or a spell. This is not reliable, however. If the mantra or spell is of the good kind, it may only drive away the spirit for a little while. If the mantra or spell is of the evil kind, even worse spirits may be attracted to the person. The second method is for the disturbed person to do repentance practice. If the person is not capable of doing it, others can do repentance practice and transfer the merit to the first person, but it will not be as effective. The effectiveness of repentance practice depends on the severity of the case.

On the other hand, if the problem is physiological, then seeking help from a doctor can be useful. If the problem is psychological, guidance from an appropriate therapist or teacher would be helpful. The practitioner must trust the therapist or teacher, and believe that the therapy will work. Otherwise, the good will and skill of the therapist will not be of benefit.

Whether someone recovering from Ch'an sickness can continue intensive practice depends on the person and the situation. If all symptoms disappear, then it is alright to continue. If the symptoms persist to any degree, it is best to forego intensive meditation until they disappear altogether.

If the problem is psychological, so long as conceptions are corrected and clear, there will be no problems resulting from meditation. Self doubt, anxiety or anger in moderate amounts are not severe psychological problems.

If the problem is physiological, it is possible that the person will not heal completely. It should be understood that I am talking about severe and special cases. Most people never encounter such problems. Pain in the knees or trouble with energy channels are not severe physiological problems.