One and a half years old fontanel is still not closed is generally normal, but if the obvious increase, much larger than normal, we need to be vigilant about the possibility of pathological conditions.
1. Physiological phenomenon: usually referred to as fontanel refers to the fontanel, the general fontanel in the postnatal age of 6 months of age gradually ossified and become smaller, mostly in the 2 years before the closure of the fontanel, for one and a half years of age fontanel not yet closed baby, such as the height and weight growth is satisfactory, movement and language development is normal, fontanel and the size of people of the same age is similar to the size of the fontanel, no abnormal symptoms, is generally considered to be normal, you can continue to observe.
2. cerebral edema: cerebral edema of the baby can also lead to the baby’s fontanel significantly increased or bulging, this situation is often accompanied by jet vomiting, lethargy and other manifestations of the abnormal, you can promptly consult a doctor, follow the doctor’s instructions for treatment.
3. Vitamin D deficiency rickets: for the baby can appear square skull, delayed eruption of milk teeth, the age of the skeletal changes such as rib beads, with fontanel not closed, if the fontanel is not closed combined with the above other abnormalities, need to be vigilant due to vitamin D deficiency and other causes, can be timely medical treatment.
If the fontanel is not closed at one and a half years of age, it is usually normal. If it is combined with other abnormalities, it is recommended to consult a specialist for a comprehensive evaluation.