Dream about hair falling out while brushing is unfortunately someone who is behaving crazily. You refuse to be dismissed. A loss of a good friend or a deterioration of your instincts. The dream is about hatred, evil, cruelty and destruction. You do not like to deviate from your plans, even if it is monotonous.
Hair falling out while brushing dream is an evidence for aspects of your personality that you have rejected, but are ready to incorporate and acknowledge. Something may be hindering or slowing your progress. A situation or a person may be trying to take over your sense of control. It is an indication for your inability to function in some situation. All that anger you have suppressed is coming to the surface in a violent way.
If you dreamt about hair falling out while brushing:
Shame, as they were so nearly in your grasp, and you almost had that date. But an old flame (in fact, so old they have practically burnt out) turns up and spoils what could have been a joyous occasion. You’ll get another chance though, so don’t worry!