Focal segmental glomerulosclerosis (FSGS) is a chronic scarring disease of the kidney. There are a number of causes of FGSG that should be reviewed with your husband’s nephrologist. His blood pressure should be carefully controlled to less than 130/80 and he should be treated with an ACE-inhibitor or ARB agent. I recommend that your husband continue to follow with his nephrologist for treatment of his disease.
You can learn more about FSGS on our web site at: https://www.kidney.org/atoz/content/focal