TIC or transient ischemic attack, can be possible because of dehydration which is due to gastrointestinal infections and maybe low intake of water and fluid
Next Steps
take a course of deworming medicine Albendazole single dose
Metrogyl 200 mg twice a day for 3 days after food
Health Tips
eat light nourishment high protein simple diet like toned milk and curd
daal roti chawal etc
lots of water and ORS types of liquids
avoid heavy carbs like maida or noodles
Avoid heavy proteins like meat
avoid fats
observe the symptoms
if possible get eyes tested only when you feel normal
regarding the blackout attack, go for check up if you get again