A nurse has injected sterile water into my buttocks on three occasions in the past month, and taken money for doing so. Is this proper?

There is no valid medical reason to inject sterile water
into the buttocks.

Lacking in dissolved salts, water is
extremely hypotonic.  Because of the difference in salt content of the injected water
and normal blood and body cells, the injection will cause rupture of the blood cells
(hemolysis) and lysis (bursting) of tissue cells.  The water, if in small quantity,
would eventually be absorbed, without lasting effect on your tissue’s contours.  In
larger quantities, however, the water would be destructive of blood and tissues and
would lead to an accumulation of degenerated blood and tissue called a seroma.  This
could become infected, causing permanent scarring, retraction or deformity of one or
both buttocks.

As you have undoubtedly
experienced, injection of water is very
painful.

I am concerned that this nurse is
fooling you into thinking that these injections would have cosmetic or medical
benefit…and is charging you money.  Unless a physician prescribed these injections, the
nurse is practicing medicine without a license and should be reported to the
authorities.   To do so, go online and find the nursing board for your
state.