in the other 40%, it can be caused by a head injury, injury during the birthing process, alcohol and drug abuse, aging or a metabolic or biochemical disturbance or imbalance.

ho batho ba bane ho ba leshome teng se ka bakwa ke ho lemala hloohong kapa ho lemala nakong ya pelehi, tshebediso e bohlaswa ya tahi le dithethefatsi, botsofadi kapa ho phatsamiseha ha ho sebetsa ka nepo ha methapokutlo ya mmele.
