Partial black out and sensation of passing out...

[nadiaax391]

I'm 18 years old, 5'9 1/2" and around 135lbs.  I'm athletic and make sure to eat properly.  My hands and feet are almost always freezing cold even in the summer.  I've been having strange fainting spells since I can remember and lately, they've gotten worse.  For example, I can sit down for about ten minutes and get up normally, not fast at all, and walk about twenty feet and all of a sudden I feel pressure in the front of my head and my vision starts to get cloudy and partially black (about 3/4).  The pounding in my head usually lingers for about a half hour after I regain vision, but my vision is still a bit blurred for about 5-10 minutes afterwards.
Also, lately, I've noticed that I've been twitching.  It's usually my legs, stomach, and left arm, but sometimes it's my whole body.  It's getting quite annoying because if I do it a lot my muscles hurt.

[Dr. Kokil Mathur]

Hi
Welcome to the forum!
Cold extremities are seen in Raynaud’s and hypothyroidism. Also low thyroid function can cause hypotension and fainting attacks. I would suggest you get the blood levels of the following checked if they have not already been checked: potassium, calcium, sodium, vitamin B complex, or vitamins B1, B3, or B6 and Vitamin D. Generally deficiencies of any of the above can cause muscle twitching and spasms in localized or generalized areas of the body. Get your kidney function, parathyroid gland function and adrenal function tests done because these affect the electrolyte balance in the body.
There is a possibility that you are suffering from ‘benign intracranial hypertension’  (BIH). This happens due to impaired CSF absorption. A generalized throbbing headache worst felt in the morning and last thing at night. This headache is generally relieved on standing (consistent with raised intracranial pressure). It is aggravated by straining, coughing or a change in position.
I think you should discuss these possibilities with your doctor. It is difficult to comment beyond this without examining. A comprehensive investigation is required keeping all the points in mind.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!

[caregiver222]

The possibilities are endless. You need a professional neurological examination by an M.D., plus a 3T MRI as of yesterday. It would help for you to be able to present your physician with a log detailing the history of the symptoms, a time-line, so to speak, detailing the very first time the problems came on, the severity, the onset, and the duration. Make a "date line" going back month by motn over the last one, two, or three years you have had these symptoms. This consultation should be ASAP. That means "as soon as possible". Not three months from now. Not two months from now. Not one month from now. Tomorrow.