Sounds like some type of vitamin deficiency~though I'm unsure about the painful ears, but stands to reason there may be a couple of things going on. I am no medical professional but I've done much research on vitamin deficiencies and I recommend that you do some too. The numb tounge , fast hearbeat, weak and shaky legs definately sounds like b12 deficiency. you don't say how old your sister is, but age is really no matter these days, because alot of young girls are malnourished, undernourished and suffer from anorexia/bulimia, which can cause multiple vitamin deficiencies. I recommend researching "symptoms of vitamin deficiencies", specifically vitamine b12,b1, b6 , vitamin d, and vitamin c. Hope this helps, good luck ...mel
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