What "form of parkinsonism" was your husband described as having?
Does your husband have the central feature and at least two of the core features described on the LBDA website? (http://lbda.org/content/symptoms
As you may know, LBD is an umbrella term that refers to two disorders -- Parkinson's Disease Dementia and Dementia with Lewy Bodies. The diagnosis depends on the relative timing of the onset of various symptoms.