Triamcinolone Acetonide is a corticosteroid, it's usually sold as a cream for topical treatment.
But look at these trials when it is applied intrathecally
Here is a quote...
Spasticity, maximum walking distance as well as disability improved significantly (P ⩽ 0.001) during TCA applications. Bladder function improved in every seventh patient.
We all have zero chance of getting hold of this.