One becomes mentally deranged when mind remains under constant tension due to complex circumstances, worries or has blood-sugar. Irrespective of reason of mental derangement treatment of the illness is to take just one sip of water, whenever the patient will drink water recite once and blowing upon it
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِیم
The other way is to take a sip of water in the mouth and recite in the heart once before swallowing
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِیم
If the patient is not in a condition to do this, then the therapist is to write the same on a porcelain plate with ink made of saffron and rose-water and the patient is to drink this rinsed water of the plate, early in the morning on an empty stomach.