I could remember as a child i was always tired in class, i had a poor attention span, teachers were cruel and would always accuse me of daydreaming. Then i would constantly talk and interrupt the teacher. Noises also startled me at times. I also had allergies, not any food ones that i am aware of, but seasonal (always allergic to grass, ragweed, and pollen) also i was allergic to cats. As a teen i had eczema breakouts and dermatitis, i also had poor decision making. I never really got good grades in school either but i did pass. As i grew into adulthood these slowly dissipated and my eczema and allergies cleared up. I'm wondering now if this had anything to do with my endocrine system (thyroid and adrenal function) although i never had any noticeable symptoms of hypothyroid.
In general i believe i was hypo several years before any symptoms started as i was always cold when others weren't and i always had a hard time losing weight despite rigorous exercise and eating way less than i should have.