You know, of course, that you need a dr's evaluation. I'd try for a holistic dr or clinic, or naturopath. See the Complementary Medicine threads on MedHelp CM Forum, and on other forums that can be found on a web search. Search all your symptoms. You definitely could have what could be a dibilitating disease, but you don't know until you're examined. Sounds to me like mineral deficiency. Look up the properties of ea vit/min and the deficiency symptoms. Think an excellent min preparation would benefit you, along with a high potency vitamin. Big box stores are notorious for a lot of filler. Don't select one with iron. Standard blood tests show iron problems, and too much is a nightmare. I wouldn't touch any product made by a company that includes iron in the multi-vit; think including iron is a blatant disregard for safety. Agree with Dnmh that you may need to alter your shoe style. Couple that with leg,ankle, foot stretching and strenthing exercises. Never wear the same shoes two days in a row, if possible. There are some incredible advances in shoe fitting. Check your yellow pages. Some stores have equipment that can determine where you apply the most weight and can recommend shoes and othotics that will level out your weight distribution, thereby causing less stress upon certain tendons, joints, etc. Research coconut oil. Know it sounds ridiculous when your feet and muscles are the problem, but that's why you should check it out. In some positions, if the sole balance is askew, all your body's skeletal muscles have to tense just to keep you upright. If you change the angle of your vertical posture by changing what's under the sole of your foot, your muscles can still hold you in place, but don't have to work to do it. This is my ten-cent explanation, as I understand it. The pro's may give you a more detailed explanation, and disagree with my wording, but my explanation at least provides you with the gist of the principles involved. Let us hear what happens with you, and do schedule a dr appt. Best wishes.
Being that I'm not a doctor, and figuring anything out over the internet with such vague symtpms is difficult at best, a visit to your primary doctor would be in order.
Basically it's certain movements that cause the twitching, I can stop them if I move my legs or feet into a different position - it's always caused from extending certain muscles in my legs or from raising my legs to a certain height.
Let me make sure I understand, you flex your foot, bringing the toes upward towards your shin, causing some twitching in your muscles, and this as after wearing heels for years?
It sounds as if your calf muscles are a little 'shortened" for lack of a better term after years of wearing heels and when you stretch them, your asking them to do something they are not accoustomed to. It can cause discomfort in your toes, because there are long tendons related to your leg muscles, and toes.
It might be a good time to start wearing different types of shoes, including your heels, but alternate to let your muscles stretch as they are meant to. A visit to a podiotrist might be another option.