welcome to health care magic
In the query you didn't mention about the age of your relative suffering from Paget's disease..It generally occurs in post menopausal women.
Generally paget's disease occur in the breast,,if it occurs in other sites it is called extra mammary pagets disease..pagets disease of the rectum
may extend to vulva
Paget's disease is not contagious,,you can safely use the toiletconsult general surgeon
and he will give further suggestions and treatment..
surgery is the only treatment..
Hope you understand my answer