1. Behavioral Phenomenon Dissection
Infants around six months old often exhibit behaviors such as scratching their faces, scalps, or pulling their ears with their nails, sometimes even leaving bloodstains. The conventional understanding usually attributes this to skin itching (such as eczema) or overly long nails. However, after ruling out pathological factors, this behavior still occurs frequently in infants when they are awake, sleepy, or agitated.
2. Neurological and psychological variables underlying the behavior
From the perspective of developmental behaviorology, scratching and pulling are the spontaneous physiological responses of infants at specific stages:
Awakening of proprioception: The fetus is in an extremely enclosed state within the womb, with limited range of limb movement. After birth, facing an infinitely open space, babies lose their natural physical barriers. They need to rely on intense tactile stimulation of the skin to confirm the existence and boundaries of their limbs. Scratching the face and head is essentially the nervous system "mapping" the body's map.
Neuroregulation and cross-temporal stress manifestations: The infant's neural inhibitory function is not yet fully developed. When exposed to overly strong external stimuli (such as noise, bright light, frequent holding) or internal drowsiness, the cerebral cortex becomes overly excited. Due to the lack of language and advanced cognitive regulation abilities, the infant will release the excessive neural impulses through instinctive, slightly painful, and autonomous stimuli (scratching, pulling ears) to achieve a stable state of self-soothing.
3. Deep Cognitive Reorganization
The mother should recognize this behavior as a cognitive shift: This is not that the baby is "self-harming" or expressing pain; rather, when the nervous system is in a state of disorder, it attempts to establish a coordinate system through the rigid tactile sensations of the body. Excessive intervention (such as wearing anti-grabbing gloves for a long time) will block this tactile feedback pathway, potentially leading the baby to seek more intense stimulation methods in the later stage.
