Hi,
How are you? There are many neurological conditions but you may be referring to multiple sclerosis (MS). The person with MS can suffer almost any neurological symptom or sign, including changes in sensation such as loss of sensitivity or tingling, pricking or numbness, muscle weakness, muscle spasms, or difficulty in moving; difficulties with coordination and balance; problems in speech or swallowing , visual problems, fatigue, acute or chronic pain, and bladder and bowel difficulties.I hope this helps. Take care and regards.
Could it possible be a Mitochondrial Disease. There are several forms of this disease. and any of the symptoms you describe could be from this.
I explain this a little bit in the Mitochondrial Disorder forum under Rare Diseases.
Hope it helps.