What is the problem if a child's muscle strength is severely weak after birth?

Patient's question:

Patient Gender: Child
What is the reason for weak muscle tone after birth?
If currently pregnant, what precautions should be taken?
Looking forward to your reply, thank you.

Doctor's answer:

Hypertonia in infancy can be seen in conditions such as cerebral palsy, developmental brain disorders, sequelae of neonatal hypoxic-ischemic encephalopathy, encephalitis, and others. Specific diagnosis requires analysis based on accompanying symptoms. It can also manifest as irritability, startle reflex upon hearing, persistent crying, and difficulty falling asleep, among other symptoms.
We know that infantile spasms can cause significant harm to children. If left untreated or if the treatment method is incorrect, the condition progresses rapidly, posing great harm to young children. Therefore, parents should pay close attention to their child's condition and seek timely medical treatment.