What Causes Dizziness And Numbness In Body With A History Of Sinusitis?

Age -31, Weight 145, Height 5 3 Medical history - sinusitis, hypoglycemia, allergies, bilateral trigeminal neuralgia Recent studies - spinal tap (MS negative), carotid doppler (waiting for results) Symptoms - dizzines, sometimes nausea, numbness in half body including face, sometimes it feels suddenly, and sometimes it comes slowly until I feel very weak. It happens very frequently and only last 15 minutes, but sometimes the weakness last for hours.