<a href=https://explorable.com/cause-and-effect>Establishing Cause and Effect</a>. Cause and effect is one of the most commonly misunderstood concepts in science and is often misused by lawyers, the media, politicians and even scientists themselves, in an attempt to add legitimacy to research.
You can't catch cancer from anyone, in any way. Cancer is not contagious. You can't catch HIV/AIDS just by touching somebody. The AIDS virus is not found in sweat. Yes, you can catch a cold, or the flu by shaking hands with someone if you then put your hands on/near a mucous membrane (eyes, nose, mouth).
Numbness or tingling and Shaking hands or tremor. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms numbness or tingling and shaking hands or tremor including Peripheral neuropathy, Carpal tunnel syndrome, and Benign essential tremor. There are 24 conditions associated with numbness or tingling and shaking hands or tremor. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.