What is the difference in an active brain lesion and non active in sjgren's syndrome?

Complex: Sjogren's can mimic primary progressive ms, and clinical signs of weakness, imbalance, incoordination or abnormal reflexes would suggest "active" brain lesions. Mri with gadolinium positivity also a sign. But sjogren's can also cause a small fibre neuropathy, and sensory symptoms and pain might be peripheral, not central. In this area, you need a neurologist who is familiar with all of this.