That's still a real form of depression, most are caused by various underlying conditions.
It's actually common for people with LBD, Alzheimer's, MS, Parkinson's, etc to get therapy early on or take antidepressants for the depression symptoms.
Yeah this, similarly for ALS, certain cancers, and Alzheimer’s. If medical suicide wasn’t stigmatized, people with these diseases and there families could talk about it, plan around it, and leave a much better situation behind.