MS Issue that is embarrassing to discuss

Good morning all, I am writing this post on behalf of my father, Whom is 60 and has secondary progressive MS. amongst many issues and discomforts his MS serves him with, He has in the last 6 months been suffering with electric shock like pain in his testicular area, every evening before bed time, For a man, this is soul destroying and totally embarrassing for him, To add to this situation, the pain has now progressed onto his penis, We have spoke to his MS specialists about this and we are waiting for a meeting but that is not due until April 2024. I found this group and I just wanted to reach out to others that may have information, similar symptoms that could give their advise on this situation my father is in. The only drug he has that can ease the pain is palexia, of which he is at the highest dosage available to him. Any feedback would be welcomed, thank you.