You can get epilepsy without trauma from a head fall.
Epilepsy is a clinical syndrome caused by highly synchronized abnormal discharges of neurons in the brain, and it is a structural damage and functional abnormality of the central nervous system caused by a variety of reasons, which is related to intracranial injuries and not directly related to cranial trauma.
Head fall without trauma is called closed brain injury, including concussion, cerebral contusion, intracranial hematoma, etc. Except for concussion, the other three types of injuries will cause damage to the central nervous system and brain tissues, which may cause highly synchronized abnormal neuronal discharges and seizures.
The degree of the disease varies, the symptoms appear differently, if epilepsy, you should communicate with the doctor in time, active treatment, to reduce the adverse consequences of the disease.