jourdain, if your husband got post vaccination petechiae, which is what I think you are describing, its a known rare side effect of vaccination, not just covid vaccination. There is information out there but basically it seems to say (I only did a quick search) that its rare, treatable or self limiting, unusual but not usually dangerous.
Here's a statement from the Platelet Disorder Support Association in the USA. If you can talk to a medic and mention thrombocytopenia or petechiae (peteekeyeye, no I am not talking down to you I have to look up the pronounciation) then you may get somewhere with the discussion? The PDSA in the US is not an animal charity!
https://www.pdsa.org/covid-19