In some cases stopping medicine that is causing memory loss or taking vitamins to address nutritional deficiencies can help, but in most cases dementia cannot be cured even with medical intervention, states WebMD. Medical conditions such as a tumor, thyroid issues, infection or AIDS also can cause reversible dementia.
When dementia is irreversible, medications can help improve mental functions, and some home treatments can improve the quality of life but don't reverse the condition, explains WebMD. For instance, eating well and making sure the home is safe can help. It also is important to manage wandering and agitation and to help a person with dementia avoid confusion by communicating clearly.