Your husband is having small mild scaly lesions without any complaints like itching or pain..right?
It seems that it would be either tinea versicolor
In both condition ,patient dose not itch.
Tinea versicicolor is fungal infection
caused by melessezia furfur and erythrasma is mild bacterial disease caused by corynebacterium minutissimum.
You consult dermatologist
, he will really differentiate and diagnose.
Both are treatable condition.
In T V , antifungal tablets like ketoconazole
and cream like ketoconazole cream may be used.
In erythrasma ,antibiotics like azithromycine and clindamycine gel may be used.
I hope the answer would be helpful to alleviate your condition .
Dr. Ilyas Patel MD