Yes. I use it on quadriplegics. I have never seen any dysreflexia. You can always have a vasovagal reaction with any person receiving dry needling. As always, start with a low dosage to see how his autonomic NS reacts. Here is one case report. There may be others in the literature.

    J Spinal Cord Med
    . 2020 May;43(3):414-418. doi: 10.1080/10790268.2018.1533316. Epub 2018 Oct 22.
    Dry needling technique decreases spasticity and improves general functioning in incomplete spinal cord injury: A case report