Injecting near the psoriasis any benefits ?

[Fred]

I don’t think it would make a difference. Or maybe it does, but even contraproductive.
The injections with the bio, are aiming at the cells in your body. All cells, as it is not possible to go for specific cells. In that cells e.g. consentyx blocks Il-17, which in its turn reduces the activity of the cell in your arthritis or your Psoriasis.
The Psoriasis, the increased cell replication, gets to a hold from the inside, as it is only a representant of the immune disease you have which is everywhere in your body.

If you inject it, subcutaneous into a Psoriasis spot, it might get stuck more or less in the dead tissue that Psoriasis is and it might not spread effectively to your cells.

No I wouldn't inject into the psoriasis, that is a big  No No  

As a point of interest you inject in your groin with your treatment I wonder why that is the chosen route ?

@Jim thank you.