Extreme weakness and shaking legs?

First of all I'm 16 male. For the past 2 years I realized this thing I have at random moment and it usually happens when I'm doing sports. My legs would suddenly feel weak and I would have to sit down. And then they start shaking and then the weakness starts to go everywhere in my body also my arms and hands shake a bit too and then I would feel like passing out. And then I start to crave food. It would usually happen for about 20 minutes and then go away. I hear a lot of people say it's low blood sugar but the thing is I was diagnosed with high blood sugar! Anyone know what else this could be? Please help?!
Asked Jun 11, 2014

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