This regional twitchings not associated with any other neurological symptoms need not be investigated unless they are debilitating or causing issues.
No treatment is required for those
It is usually due to non specific sympathetic over activity due to
Stress / sleep deprivation / caffeine / drugs like salbutamol/SSRI/ mild hypocalcemia/ hypoglycemia etc which subsides
Identify your triggering factor
Donot worry if there is no associated symptoms like- muscle weakness/ neuro defecits, muscle wasting or pain
Next Steps
If u feel it is pathological, kindly contact me via practo for further evaluation and clarification of ypur doubts