Tendon hyperreflexia

Introduction When the sacral reflex is involved in the pyramidal beam above the reflected spinal cord center, hyperreflexia occurs. Deep reflection is a reflection caused by stimulation of tendons and periosteal receptors, commonly referred to as tendon reflexes. Whether the muscle contraction caused by reflex has a continuous rhythm, that is, using a diagnostic hammer to smash the tendon or periosteum. Although it is only a sniper, the reflex muscle contraction is not one time, but continuous repeated tremor, clinically. It is called hyperactive reflex. If hyperactive reflex occurs, it can be considered as deep reflection hyperthy, which is pathological.

Cause

When the sacral reflex is involved in the pyramidal beam above the reflected spinal cord center, hyperreflexia occurs. Deep reflexes are seen in upper motor neurons such as damaged pyramidal tracts, or in hyperparathyroidism and increased excitability of the nervous system. Mostly unilateral or bilateral intensity asymmetry or with other signs of pyramidal tract injury. Spinal cord lesions, cerebral arteriosclerosis, peripheral nerve damage, neurosis, and increased neurological excitability can also occur with hyperreflexia, mostly symmetry, without other signs of pyramidal tracts.

an examination

Related inspection

Brain CT examination of nervous system examination

Usually, the following methods are used to comprehensively determine the diagnosis. The first is the left-right comparison. If the reflections on both sides are larger and one side is more obvious than the other side, it can be considered that the side with more obvious reflection is deep reflection hyperthyroidism. However, in some cases, one side is slightly weaker than the normal sputum reflex, while the other side is slightly stronger than the normal sputum reflex. At this time, it is relatively difficult to judge. It is difficult to determine which side is not normal by reflection alone. At this time, it is necessary to combine the other signs of the nervous system to make a comprehensive judgment.

Differential diagnosis

(1) Amyotrophic lateral sclerosis: the muscle mass atrophy in the upper limbs of the early side, and the muscle atrophy of other limbs gradually appears. The lower limbs and the trunk can be affected, and the facial muscles and the lingual muscles are contracted until they become atrophy. Whole body muscle atrophy.

(2) Cerebral hemorrhage (cerebral haemorrhage): There is a history of hypertension, often in the onset of 50 to 60 years old, sudden onset of physical activity or emotional agitation, rapid development, early signs of increased intracranial pressure such as headache, vomiting, consciousness Obstruction, accompanied by meningeal irritation and partial brain symptoms such as hemiplegia and aphasia, the disease may be aggravated, the muscle tension of the limbs is low, nasal breathing, repeated vomiting, often bilateral pupils are not large, generally the bleeding side of the pupil is enlarged, part In both cases, the eyes gaze to the hemorrhagic side, the contralateral hemiplegia of the hemorrhagic foci, the muscle tension is low, and the Babinski sign is positive.

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