Question
When the hand is opened, the thumbs of a baby who is about to be a month old are always bent and do not straighten out. Is this normal? Do we need to start training them to straighten it out now?
Answer
It is a normal physiological phenomenon for a newborn’s thumb to be bent. Since newborns lack sunlight exposure, their arms cannot fully extend. This condition usually disappears naturally within 3 to 4 months, so parents do not need to worry. Just keep a close eye on the baby’s physical condition. If any abnormalities are found in other aspects, the child should be taken to a doctor immediately to avoid delaying treatment.