Answer:
Dear
B,
Blood
coming from the penis after masturbation is type of bleeding that
usually comes from the prostate gland.
It is
due to a tear in one of the fragile veins of the prostate. The prostate
is the organ that produces the majority of the seminal fluid in response
to sexual stimulation. When the prostate contracts at the time of
ejaculation, a vein may tear and blood mixes with the semen (hematospermia).
Blood
in the urine (hematuria) may be caused by a bladder infection, kidney
stones, bladder cancer, urinary tract infectionor a tumor in the urinary
tract. Some types of exercise, such as running or biking, may also
cause bloody urine.
In rare
cases, blood in the urine is caused by bleeding from a fluid-filled
sac (cyst). The blood may be present every time you urinate or just
from time to time.
There
are lots of causes. In men over 40, they should screen for bladder
cancer.
Blood
in the urine should never be ignored. This could be the first sign
of a serious condition.
Blood
in the urine can present in one of two ways: gross hematuria (blood
that you can see in the urine), and microscopic hematuria (blood that
is only seen when the urine is examined under a microscope). Both
types can have serious causes.
When
passing blood in urine is associated with pain, especially abdominal
pain, it could be associated with kidney or urethral stones. The pain
could be localized to the back, to the side, to the groin, or the
penis in men and the labia in women.
Blood
in the urine in anyone over the age of 40, especially in people who
smoke, should warrant full urologic evaluation because the most common
cause of blood in the urine in this group of people is bladder cancer.
Before
that age, infection may be the cause. However, if gross hematuria
is present, even once, it certainly needs to be further investigated.
