@fuzzlepuff
Have you had MRIs of head, cervical spine and lumbar spine? Have you had EMG nerve conduction studies of upper and lower limbs? Have you had a full neurological blood work panel done by a neurologist? You should be able to find good specialists nearby depending on your location (don’t necessarily need to travel to a Mayo Clinic initially).

Did you have covid and/or vaccines? Have you been tested for long covid?

Have you been checked for pseudobulbar affect (laughing/crying)?

1. https://www.mayoclinic.org/diseases-conditions/pseudobulbar-affect/symptoms-causes/syc-20353737

2. https://my.clevelandclinic.org/health/diseases/17928-pseudobulbar-affect-pba