Weakened or absent hug reflex

Introduction Hug Reflex - When suddenly changing the posture of a newborn, or when he hears a loud voice, he will (1) abduct his arms and stretch his fingers; (2) the upper limbs flex and adduct in a hug; (3) Sometimes accompanied by crying. Hyperreflexia suggests that the bilateral brain has a disease, and the disappearance or weakening of the neonatal period suggests that the neonatal central nervous system is inhibited.

Cause

Embrace the cause of the weakening or disappearance of the reflex:

Embracing reflex is the intrinsic reflex of the spinal cord, which belongs to unconditioned reflex. If this kind of hug reflex is lacking, it means that the child is not matured in the brain nervous system, and the second may be damage or lesion of the nervous system, intracranial hemorrhage or other intracranial diseases. It gradually disappears with the development of the high-level center of the cerebral cortex.

an examination

Related inspection

Cerebrospinal fluid routine test (CSF) cranial ultrasound examination of cerebrospinal fluid pressure

Embrace the check diagnosis that the reflection is weakened or disappeared:

In the supine position of the newborn, hold the baby from the back, hold the baby's neck and back with one hand, and hold the pillow with the other hand, then drag the hand of the pillow suddenly down a few centimeters (not let go) to make the head and neck "backward" "A few centimeters. Normally, the two upper extremities are abducted and straightened, the fingers are opened, and the upper limbs are flexed and retracted. Premature infants often have incomplete reactions, that is, the upper limbs do not flex and retract.

This reflex was evident in 3 months after birth and completely disappeared after 6 months. There is no such reflex in the neonatal period, indicating that there is brain damage. If one side of the upper limb lacks a shocking reflex, it indicates a brachial or clavicular fracture caused by birth trauma or other causes. When the brain has damage or acute lesions, the shock reflex can be delayed or disappeared. If it can still be caused after 4 months, it should be noticed; it still appears after 9 months, which is a characteristic of chronic brain lesions.

Nerve development is not a light hug to reflect, mainly to see if there is a history of suffocation and hypoxia, to observe the future development of nerves, and other physiological reflexes such as foraging reflexes, sucking reflexes, holding reflections, cross-legged reflexes, and torso Neck correction and flexor tension and so on.

Differential diagnosis

Embrace the symptoms of fading or disappearing confusing:

Newborns have a variety of temporary primary reflexes at birth. Embracing reflexes is one of the original reflections of newborns. The primary reflections commonly used in clinical practice are: 1 rooting reflex; 2 sucking reflex; 3 grabsp reflex; 4 moro reflex.

Rooting reflex is a type of unconditional reflex in newborns. When the newborn's cheeks touch the mother's breast or other parts, the action of finding the nipple can occur. When he touches the newborn's cheek with his fingers, his head will also turn to the direction of stimulation. The reflection occurs about 0 to 3 months and gradually disappears at 3 to 4 months.

Sucking reflex is one of the innate reflections of mammals and human babies and is one of the unconditional reflexes of newborns. When the baby's lips are touched with a nipple or finger, the sucking and squirming of the lips and tongue will occur accordingly. It disappeared 3-4 months after birth and was gradually replaced by active eating action. But in sleep and other occasions, the baby will still show spontaneous sucking action for a period of time. If the neonatal sucking reflex disappears or is significantly weakened, it indicates brain lesions; if hyperthyroidism is hunger performance. There is still a suggestion of cerebral cortical dysfunction after 1 year of age.

Holding a reflex - a normal newborn who is quietly awakened can easily cause a reflex. You can extend your double index finger or little finger from the side edge of the newborn's two hands into the palm of your hand and gently press the palm of your hand. He will hold on tightly. Your finger causes a grip reflection.

In the supine position of the newborn, hold the baby from the back, hold the baby's neck and back with one hand, and hold the pillow with the other hand, then drag the hand of the pillow suddenly down a few centimeters (not let go) to make the head and neck "backward" "A few centimeters. Normally, the two upper extremities are abducted and straightened, the fingers are opened, and the upper limbs are flexed and retracted. Premature infants often have incomplete reactions, that is, the upper limbs do not flex and retract.

This reflex was evident in 3 months after birth and completely disappeared after 6 months. There is no such reflex in the neonatal period, indicating that there is brain damage. If one side of the upper limb lacks a shocking reflex, it indicates a brachial or clavicular fracture caused by birth trauma or other causes. When the brain has damage or acute lesions, the shock reflex can be delayed or disappeared. If it can still be caused after 4 months, it should be noticed; it still appears after 9 months, which is a characteristic of chronic brain lesions.

Nerve development is not a light hug to reflect, mainly to see if there is a history of suffocation and hypoxia, to observe the future development of nerves, and other physiological reflexes such as foraging reflexes, sucking reflexes, holding reflections, cross-legged reflexes, and torso Neck correction and flexor tension and so on.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.