If a man's urine is red, be alert to this problem!

Normally, men's urine is colorless or slightly yellow. If the urine is dark yellow, it may be related to internal heat or daily diet. So, why does a man's urine suddenly turn red or even hematuria?

(1) Various primary glomerular diseases:

Acute glomerulonephritis, chronic glomerulonephritis, rapidly progressive glomerulonephritis, focal glomerulonephritis, viral glomerulonephritis, Alport syndrome, thin basement membrane nephropathy, Goodpasture's disease-nephritis syndrome, IgA nephropathy, nephrotic syndrome, etc.

(2) Infection:

Renal tuberculosis, pyelonephritis, cystitis, urethritis, etc.

(3) Deformity:

Renal vascular malformation, congenital polycystic kidney, wandering kidney, kidney ptosis, hydronephrosis, urinary tract malformation, etc.

(4) Tumor:

Nephroblastoma, renal angioma, etc.

(5) Renal vascular disease:

Renal venous thrombosis, left renal venous compression syndrome (nutcracker phenomenon).

(6) Damage:

Kidney contusion, urinary tract trauma, surgical or instrument examination injury, etc.

(7) Stones:

Kidney stones, bladder stones, urinary tract stones, etc.

(8) Foreign matter:

Foreign body in the bladder or urethra.

(9)Medication:

Nephrotoxic drugs such as kanamycin, gentamicin, polymyxin, amphotericin, vancomycin, salicylic acid preparations, sulfonamides, phenytoin sodium, cyclophosphamide, urotropine, turpentine, mercury, arsenic, proguanil, etc.