There are many currently available medications for treating psoriatic arthritis and psoriasis. Some meds are pills, some are infusions, and some are injections (even auto injectors like an epi-pen). It sounds like you've been on Embrel, a TNF blocker, and have been getting cortisone injections (does that sound right?) into your painful joints. But otherwise, have you been on any other medications, like Methotrexate, Otezla, or Xeljanz? Do any of those sound familiar? Have your doctors diagnosed you with psoriatic arthritis? And have they directed you to follow up with a rhuematologist?