Thanks for your query.Based on the facts that you have posted it appears that your husband has Muco Cutaneous Candidiasis
Get his Blood sugar levels done to rue out Diabetes as this is common amongst people with Diabetes.
Take some anti fungal medication
orally and tropical Gel for local application over foreskin and glans Penis.Get prescription of these drugs from your family Physician.
Since he gas Phimosis and gets repeated episodes of this infection it will be better if ha gets circumcised.
Consult qualified General Surgeon