What is the major differences between Cocaine, Meth, and Speed?

I know this is an odd question, but on Christmas eve, one of our Family members was acting erratically. He was sweating profusely (Meaning changing his shirt and drying his face with a washcloth the whole day). He was speaking incredibly fast and dramatically. He was very upbeat and happy, but also irritable. And to top it off, his nostrils were red. We know it is something, but would like some input on what it might be. Thanks for any suggestions.

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