The Dr says he sees a blockage in the urethra but not a kidney stone there is terrible pain when an alchoholic drink is drunk what could this be?
The other poster is correct, but here is an easy explanation of a blocked urethra: It's like a straw that is packed with sand, but eventually if fluids are behind it (urine) the sand will eventually move. This causes infection. You don't have to pass a stone to have great pain. The other, if this person is an alcoholic it can cause high uric acids which can be caused from too much drinking. This can also cause gout (swelling of especially the leg or ankles) and can be extremely painful. It is adviseable that this person seek medical help as soon as possible. Look into a urinary tract infection.