Some kidney blockages won't cause symptoms; however, Merck Manuals notes that gastrointestinal symptoms like nausea and pain are possible if hydronephrosis occurs. Hydronepherosis is the medical term for a distended kidney that is caused when urine backs up behind the blockage. This causes pressure in the kidney, which can lead to loss of kidney function in the affected kidney.
Swelling of the body, a rash, changes in urination, pain in the leg, back or side, feeling cold, a metallic taste in the mouth, shortness of breath, fatigue and dizziness are signs of kidney impairments, as noted by the National Kidney Center.
Kidney blockages can be partial or complete, notes Merck Manuals. They can occur slowly, which is known as chronic kidney blockage, or they can occur rapidly, which is known as acute kidney blockage.