Scale on this denphal or something else

[Blooferlady86]

Hello all,

In the process of researching what I believe are fungal spots, I found some pictures of scale on some denphals that made me a bit paranoid. I have one denphal that seems to have several issues and doesn't seem to be doing well. This is my first time dealing with any kind of pest or disease, so I'm just trying to keep my other plants safe.


So, 2 questions:

Is this scale or old, dead growth?

If one out of three canes is doing worse than the others, is it wise to cut my losses, cut the cane, and try to let the other two get healthy?