Drop Attack: From 2 Different Sources
A brief disturbance affecting the nervous system, causing a person to fall suddenly to the ground without warning. Unlike in fainting, the person may not lose consciousness, but injuries can occur. Elderly women are the most commonly affected. The causes are not fully understood, but they may be a form of transient ischaemic attack (TIA) in which there is a fall in blood flow to nerve centres in the brainstem. Elderly men may have a drop attack while passing urine or while standing, possibly due to low blood pressure or an abrupt alteration in heart rhythm. Akinetic seizures (a rare form of epilepsy) are also sometimes described as drop attacks.
There is no treatment for drop attacks in the elderly. Akinetic seizures respond to anticonvulsant drugs.
A brief episode affecting the nervous system that causes the person to fall suddenly. There is no loss of consciousness. The loss of tone in the muscles, responsible for the fall, may persist for several hours; in such cases moving the patient or applying pressure to the soles of the feet may restore muscle tone. In most cases, however, recovery is immediate. The cause is probably a temporary interference with the blood supply to the brain. In others there may be some disturbance of the vestibular apparatus which controls the balance of the body. (See EAR, DISEASES OF; TRANSIENT ISCHAEMIC ATTACKS OR EPISODES (TIA, TIE).)
The temporary loss of consciousness caused by an abrupt slowing of the heartbeat. This may happen following SHOCK, acute pain, fear, or stress. A common cause of fainting in normal people, a vasovagal attack may be a consequence of overstimulation of the VAGUS nerve which is involved in the control of breathing and the circulation.... vasovagal attack
See DROP WRIST.... wrist-drop
See INFANTILE SPASMS.... salaam attacks
See myocardial infarction.... heart attack
This is the inability to dorsi?ex the foot at the ankle. The foot hangs down and has to be swung clear of the ground while walking. It is commonly caused by damage to the lateral popliteal nerve or the peroneal muscles.... drop foot
A large net on a rigid frame, which is dropped over vegetation to collect specimens of outdoor-resting mosquitoes.... drop net
This is the inability to extend the hand at the wrist. It is usually due to damage to the radial nerve which supplies the extensor muscles.... drop wrist
Panic attacks, or panic disorders, are recurrent short episodes of acute distress. Some sufferers may be mentally confused and fear impending death. Initially these attacks tend to occur unexpectedly but, if recurrent, they often become associated with certain places such as a con?ned space (lift) or among crowds. Symptoms include a feeling of breathing diffculties, including overbreathing, PALPITATION, dizziness, sweating, faintness and pains in the chest. Attacks are usually short (a few minutes) but not often associated with physical illness, although victims may have an anxiety disorder or PHOBIA. If troublesome or disabling, attacks can be treated symptomatically with short-term ANXIOLYTICS or on a long-term basis with BEHAVIOUR THERAPY.... panic attacks
A measure of the occurrence of a contagious disease among known (or presumed) susceptible persons following exposure to a primary case.... secondary attack
Episodes of transient ISCHAEMIA of some part of the cerebral hemispheres or the brain stem (see BRAIN) lasting anything from a few minutes to several hours and followed by complete recovery. By de?nition, the ischaemic episode must be less than 24 hours. These episodes may be isolated or they may occur several times in a day. The cause is ATHEROMA of the carotid or vertebral arteries (see ARTERIES, DISEASES OF) and the embolisation (see EMBOLISM) of PLATELETS or CHOLESTEROL. These attacks present with strokes (see STROKE) that rapidly recover.... transient ischaemic attacks or episodes (tia, tie)
A condition in which the foot cannot be raised properly and hangs limp from the ankle. Neuritis affecting the nerves that supply muscles that move the foot is a common cause and may be due to diabetes mellitus, multiple sclerosis, or a neuropathy. Weakness in the foot muscles can also result from pressure on a nerve (due to a disc prolapse or a tumour) as it leaves the spinal cord. Treatment is of the underlying cause, but in many people the weakness persists. A lightweight plastic caliper splint can be used to keep the foot in place when walking.... foot-drop
(NEAD) a condition characterized by episodes that resemble epileptic seizures but lack the abnormal electrical activity in the brain typically associated with *epilepsy. See non-epileptic seizure.... non-epileptic attack disorder
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