can anxiety cause absance seizures

16m, i struggle a lot with health anxiety and brain tumours is always been the biggest one i started noticing symptoms from brain tumours as i started to worry about them. one of the symptoms i noticed was these whay felt like blacking out , one min i was awake the next it felt like was waking up from something very scary feeling lasted about 30 secend and happened when i was watching or readying about either brain tumours or seizures. one happened next to someone and they noticed nothing . so i just wanted to know can anxiety cause this