I am 63 years old and have had the same problem like an electric shock/tingling feeling that lasted a few seconds right down both arms after urinating! Just like the 68 year old lady who posted a similar message, I too have an hystorectomy and had reoccuring uninary tract infections! Had no radiotherapy so not due to that. The Dr at the emergency hub in Barking did look at me as if i was mental! So Dr's have no idea what it is! The problem is definitely due to urinate infections as I get this tingling/shock down arms every time I have a urine infection!