Ok, guys I'm legitamately crying.  So I'm just combing my fingers through my hair, and then suddenly i felt a tender/soft spot.  I  check again and i feel that it's bigger.  I take a picture with my phone, but nothing, so i then go to the bathroom and I have a bald spot!  It's dime size, but how can I have a bald spot.  I'm in my early twenties, like literally I've just turned 20 not too long ago.  Now, I'm looking for a dermatologist, but i'll make an appointment tomorrow since it's late.  Has this happened to anyone?  I guess i should add that my hair is probably 25+ in long, and i don't think it's thinning, like i haven't noticed anything, but idk maybe i'm just oblivious.  Also i rarely do anything to my hair, no heat, no sprays, nothing i just sometimes put it in a ponytail!  I haven't even brushed it in 3 years because literally the day after i take a shower (with a shower brush) it's ok.   I've been growning out my hair; usually i have it at 15 or so inches and this is the longest i've had it.  I haven't been getting enough sleep, but i developed insomnia.   I'm so scared, and just crying.  I really don't need this added problem, so if it isn't because of stress and it's something else i figure i'm just going to get more stress and then that will then become a contributor and i'll have to buy wigs.  

sorry just venting.