Why crystalluria is the side effect of sulphonamides?

Alternative Medicine
#1
#2

Sulfonamides may cause:

dizziness,
headache,
lethargy,

#3

diarrhea,
anorexia,
nausea,
vomiting, and
serious skin rashes.
Sulfonamides should be stopped at the first appearance of a skin rash before the rash becomes severe.