Weakened or absent abdominal wall reflexes

Introduction For patients with intracranial lesions, such as hemiplegia, one side of the abdominal wall reflexes may be weakened or disappeared due to damage to the central nervous system.

Cause

The cause of weakening or disappearing of abdominal wall reflex

Intracranial lesions, central nervous system damage. The upper reflex disappeared at 7-8 knots of the thoracic cord. The central reflex disappeared in the 9-10 lesions of the thoracic cord. The lower reflex disappeared in the 11-12 lesions of the thoracic cord. The unilateral reflex disappeared in the unilateral pyramidal tract disease. Loss, bilateral reflex disappeared in coma, acute peritonitis or abdominal wall is too loose.

an examination

Related inspection

Abdominal wall reflex abdominal wall tension neurological examination abdominal shape palpation intracranial Doppler blood flow map (TCD)

1, physical examination can be diagnosed.

2, can do neurological examination.

Differential diagnosis

Differential diagnosis:

1, anal reflex weakened or disappeared: indicating bilateral pyramidal or cauda equina damage. When the cauda equina nerve root is damaged, it can manifest as various symptoms of nerve damage below the waist 2 . When the horsetail is damaged, the boundary of the sensory disorder is clear. The upper anterior border is the groin, and the posterior is the horizontal line at the upper end of the humerus. Below this, all the hips, perineum and lower limbs have sensory disturbances, accompanied by spontaneous pain (electrical pain) and abnormal perineum. Feeling and radiating to the lower extremities, often painful feelings are delayed. The height and extent of the horsetail damage are different. The upper and lower bounds can be different. Some papers have reported that the recovery of motor function is better than the recovery of sphincter function, and the recovery of sensory function is the worst. Recovery of sphincter function, recovery of patients with urinary retention is superior to patients with urinary incontinence.

2, hug reflection weakened or disappeared: hug reflection, when suddenly changing the posture of the newborn, or when he heard a big voice, he would

(1) The arms are abducted and the fingers are extended;

(2) The upper limb flexion and adduction is a hug;

(3) Sometimes accompanied by crying. Most reflexes continue to exist for 3-4 months after birth, suggesting brain lesions, such as intracranial hemorrhage or hypoxia, and some reflexes such as cervical reflexes will disappear after 6 months. In addition to the above-mentioned Baba reflection and foraging reflection, such reflections include suction reflection, holding reflection, hug reflection, neck reflex and automatic stepping.

3, weakness of the ankle and weakness of the tendon: the change of nerve root function is a symptom of lumbar disc herniation, manifested as weakness of the ankle and weakness of the tendon. Lumbar disc herniation is a diagnosis of Western medicine, and Chinese medicine does not have this disease name. Instead, the disease is attributed to the category of low back pain and low back pain. This disease is one of the more common lumbar diseases in the clinic, and it is a common and frequently-occurring disease in orthopedics. Mainly because the lumbar intervertebral disc parts (nucleus pulposus, annulus fibrosus and cartilage plate), especially the nucleus pulposus, have different degrees of degenerative changes, under the action of external factors, the annulus fibrosus ruptures, nucleus pulposus tissue rupture Prominent (or prolapsed) in the posterior or spinal canal, causing adjacent tissues, such as spinal nerve roots, spinal cord, etc. to be stimulated or oppressed, resulting in lumbar pain, numbness, pain and other clinical symptoms of one lower limb or both lower extremities .

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