Hi and welcome,
I really don't know very much about either condition, we've had people over the years that thought their symptoms might be MS but have ended up being diagnosed with a Thyroid conditions, Sjogrene's or peripheral nervous system conditions. I don't know if this will help but Sjogrene's has an association with sensory neuronopathy (Ganglionopathy) see link below...
In relation to the LP results, assuming "paired obands" means the same number of obands was found in both your blood and spinal fluid serum.....Obands associated with MS are unique to the serum or in other words 2+ additional obands that were not in the blood.
Reflexes are graded from 0 to 4, 0 is absent reflex (hypo reflex) and 4 is repeating reflex (hyper reflex ie clonus) both are always abnormal clinical signs.
"Hyporeflexia is an absent or diminished response to tapping. It usually indicates a disease that involves one or more of the components of the two-neuron reflex arc itself."
"Peripheral neuropathy is today the most common cause of absent reflexes. The causes include diseases such as diabetes, alcoholism, amyloidosis, uremia; vitamin deficiencies such as pellagra, beriberi, pernicious anemia; remote cancer; toxins including lead, arsenic, isoniazid, vincristine, diphenylhydantoin. Neuropathies can be predominantly sensory, motor, or mixed and therefore can affect any or all components of the reflex arc (see Adams and Asbury, 1970, for a good discussion). Muscle diseases do not produce a disturbance of the stretch reflex unless the muscle is rendered too weak to contract. This occasionally occurs in diseases such as polymyositis and muscular dystrophy."
Hope that helps.......JJ