Bilateral frontal, temporal, and parietal subarachnoid widening is a result described by imaging, which may be a physiologic manifestation, but it may also be caused by hydrocephalus, cerebral atrophy, and other diseases.
1. Physiological manifestation: the normal value of the width between the frontal parietal and the skull in adults is 0~4mm, and the normal value of the width of the longitudinal fissure is 0~5mm. If the bilateral frontal-temporal-parietal and the subarachnoid space widens within a certain range, it may be just a physiological manifestation, which can be detected by imaging, but it cannot be taken as a clinical diagnosis.
2. Hydrocephalus: It may be congenital hydrocephalus or acquired hydrocephalus. Infantile hydrocephalus is mostly related to cerebral dysplasia, which can be detected by examination and widening of bilateral frontal, temporal and parietal subarachnoid space. Acquired traffic hydrocephalus can also occur type of situation.
3. Cerebral atrophy: it usually occurs in the elderly, such as suffering from Alzheimer’s disease, which leads to atrophy of the brain, and then it is easy to cause widening of the subarachnoid space.
The widening of the subarachnoid space in both frontal, temporal and parietal regions is detected through imaging, and should be reviewed regularly in the hospital, including intracranial CT and magnetic resonance, etc., so as to clarify the cause of the disease and then carry out treatment in time.