Many guerrillas fled yesterday morning as government soldiers closed in from three directions on the base in the north-western province of Banteay Meanchey. Phum Chat's capture left only several small Khmer Rouge-controlled areas still standing in the regions under attack. It is the biggest assault on the group since the UN peace-keeping mission began here 17 months ago.
For example, panic attacks, particularly those that occur at nighttime, may result in lightheadedness, which can in turn cause dizziness and hyperventilation. Patients with post-traumatic stress disorder may also feel dizzy when lying down, although this is rare.
Dizziness or light-headedness when standing up occurs as a result of abnormal blood pressure regulation. Normally, when people stand, gravity causes blood to pool in the veins of the legs and trunk. This pooling lowers the blood pressure and the amount of blood the heart pumps to the brain. Low blood flow to the brain causes the dizziness and other symptoms. To compensate, the nervous system quickly increases the heart rate and constricts blood vessels, which rapidly returns blood pressure to normal before symptoms can develop.