I've been feeling very lightheaded almost to the point of fainting for almost 3 years now. It's been better at times, but lately (about 5-6 months now), it's been constant when i'm standing or walking. I do get heart palpitations occassionally, I get panick attacks (or mini ones, i can control them if i lay down). Recently for about a week now, i started having numbness/tingling in my hands/arms and feet/legs. All on the left side. It lasts for the whole day sometimes. I saw my physician this week and he still thinks it's anxiety related. I'm very nervous with all these symptoms. My other symptoms are: irritability, poor memory, migraines, stiff neck, loss of weight. Any ideas what all this could be? Can it really be anxiety related? if so, what's the best treatment or tests should i try? Please reply as soon as possible. thanks.