<s>[INST] Hello, my name is Alex, I am a female. I am 14, almost 15 and in 8th grade. I am 5 5 height, and my weight is 115 ibs I have been to 5 different doctors, and 2 different hospitals. My mother and I have paid thousands to dollars to get help for me. For the past two and a half years I’ve been blacking out, where everything goes black and I can’t see a thing. Sometimes when I black out I can’t see, hear or move anything. Most times it’s only for a couple seconds. A couple times from blacking out, I’ve fallen down stairs and walked into walls. The first time I blacked out I was with my friends and I couldn’t move or hear, but I didn’t black out completely, it was blurry. It felt like a couple seconds, 30 seconds at the most, but it wasn’t, my friends told me it was 3 or 4 minutes. Last year I went to the doctors, they said it was nothing wrong with me, and that it was all in my head, I was making myself black out. But I don’t believe that. Well at the doctor they found out I had a blood clot in my heart, my brain isn’t normal as it should be and that I have a problem with my blood that is making me always cold. When I run, I barely can breathe, it feels like someone is stabbing me in the heart, and I could pass out right there, I only run when I really need too. The blood clot the doctors found wasn’t that major; they said actually very small, that I don’t have to worry about it. A few months ago I had an EEG (I think that’s what it was called) and they had me stay up for 24 hours, and I couldn’t eat or drinking anything besides water for 24 hours. The put the hat thing on my head then had me stay up for 30 minutes, they told me it said that my brain was sleeping (they used a larger and more science word, they said that for me to understand). Neither my doctors nor I understand why I am always cold. I have been outside at 80 degrees weather, and it felt like 50 degrees. One winter day it was almost 70 degrees in my house and I thought it was 20 degrees, [/INST] It seems that you have more than one problem and they're not so simple. The easiest first. Your perception of temperature may differ from other people for many reasons. The most common is just preference and conditioning but there are some medical reasons. Your description suggests that you will have had testing for these causes leaving perception or how you interpret the sensation as most likely. This is not a disease.Blackouts are just that. You have no memory of the event. If you remember, you didn't blackout. Blood pressure may vary in some people and a low blood pressure may make you feel as though you're blacking out. This may leave you with a memory of the event. The chance that something severe is wrong that is causing episodes of low blood pressure, that has also evaded your doctor's prying eyes, is quite low. You have had all of the typical testing that is done to evaluate your complaints. Stick with your family doctor who can advise on the need for anything else. </s>