What's cause this electrical ground next to my hand?
Answers: You are detecting a ground fault or static electricity.
For static electricity try shifting your shoes. Plastic shoes (flip flops/thongs) can be a problem. In areas with hearth rug you can have the runner made with interwoven carbon fibers which are grounded. This method is popular surrounded by northern climates with low humidity (<10%).
A ground blemish is usually a wiring error by no have a proper earth ground. If it is a short time ago one location it could be the wiring, if heaps locations then more promising to be static electricity.
Try changing your shoes and remove nylon clothing.
It's static electricity.
It may be from the path you walk (if you drag your feet) or the type of shoes you are wearing.
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