Insanity 
To dream that you are insane or that someone is insane symbolizes an escape from reality. This also means difficulties in deciphering right from wrong.
Madness
To dream that you are diagnosed with madness or that you are mad indicates that you will soon be facing problems, hardship, and extreme anguish. Perhaps you are displaying distasteful actions in your life.
To see others suffering from madness indicates that your expectations and anticipations will fall short of your desires.
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