Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. The symptom you are mentioning here is definitely peculiar. This may be related to psychological symptoms of obsession. But for the time being, you should consult a physician. Before that you should be able to explain the problem much better than this. The shock could be due to your touching metal objects of your house, rain may soak every part of your house, current must be leaking somewhere, and you feel it when you touch any metal objects attached with wall. Try to reason your experience. If you cannot do it, get help from wise people. Only then approach physician. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.