This is 5+ years old, recently, there has been more research, especially with the formal inclusion of SFN on Sjogren's disease activity scales.
Neurologic involvement frequently preceded the diagnosis of SS
(81% of patients).
Neurologic involvement occurs in approximately 20% of patients with primary Sjögren syndrome (SS). However, the diagnosis of SS with neurologic involvement is sometimes difficult, and central nervous system (CNS) manifestations have been described rarely. We conducted the current study to...
pubmed.ncbi.nlm.nih.gov
Neurological manifestations may precede the sicca symptoms in 40 to 93% of
the cases [8, 14]. As described by Mori et al. [11], 93% of patients were
diagnosed with pSS after neuropathy symptoms appeared.
Furthermore, CNS involvement may precede clinical diagnosis by many
years and may lead to an underestimation of other neurological and/or
systemic diseases [10].
Neurological onset often precedes by many years both the appearance of
systemic symptoms and the immunological diagnosis. Thus, pSS should
always be considered in patients with relatively nonspecific neurological
symptoms associated with sicca syndrome. MRI and neuropsychological
assessment are necessary for an early diagnosis, particularly when
neurological symptoms precede systemic involvement. Because of the great
heterogeneity of neurological involvement in pSS, neurological
complications should be the subject of large prospective cohort studies.
Background Primary Sjögren’s syndrome is the second most common rheumatological disorder after rheumatoid arthritis. It typically presents as xerophthalmia and xerostomia in postmenopausal women. Involvement of the central nervous system has been recognized, although its pathogenesis and...
jmedicalcasereports.biomedcentral.com
Neurological symptoms preceded the diagnosis of SS in eight patients.
Conclusions
Peripheral neuropathies are frequent in SS patients. Neurologists should be aware of possible
autoimmune causes of neuropathies because clinical manifestations of neuropathy may
precede the development of other symptoms of the autoimmune disease.
Peripheral neuropathy may be the first symptom, but may also develop later in
the course of the disease.
In 8 (35%) of 23 PNS+ patients, neurological symptoms preceded the diagnosis
of pSS.
Some of the previous studies suggest that nervous system involvement can be the
presenting feature of SS, while others report that it is rather a late finding in the course
of the disease (Govoni et al., 1999; Grant et al., 1997; Griffin et al., 1990; Malinow
et al., 1986; Mori et al., 2005; Vrethem et al., 1990). Berkowitz et al. found that
neurological symptoms preceded the diagnosis of SS in 81% of patients (Berkowitz &
Samuels, 2014). In another study, conducted by Seeliger et al., a diagnosis of Sjögren's
syndrome was made in 44 of 184 (24%) patients with symptoms and signs of a severe
progressive symmetric or asymmetric peripheral neuropathy (Seeliger et al., 2019). In
our group, neurological symptoms preceded the diagnosis of pSS in 35% of patients.
This fact implies that these are patients who will first report to a neurologist.
In our cohort, neurological manifestations preceded the sicca symptoms in 72.1% of the
patients, which is consistent with the findings of other studies. 17–19
In 25-92% of patients affected by Sjögren’s syndrome, neurological symptoms may precede
the sicca syndrome.
“At least one-third of patients with pSS can present with extraglandular involvement, with
neurological dysfunction being one of the most frequent conditions… In 25–60% of cases,
neurological symptoms are the first clinical manifestation and can precede the diagnosis of pSS
on an average of two years,” the scientists wrote.
Neurological manifestations may precede. SICCA symptoms, so all patients with
polyneuropathy would be tested for Sjogren's syndrome.
However, neurological manifestations occur in 10 to 60% of patients with Sjögren's
syndrome and can often precede classic sicca symptoms in Sjögren's syndrome in some
cases up to several years. Rarely, cranial neuropathy can be the initial presentation. Thus, it
is important to consider screening for Sjögren's syndrome in the evaluation of pediatric
patients with new onset of isolated cranial neuropathy even in the absence of classic sicca
symptoms.
Q: Can you explain this study in plain English?
A: Sure. Dysautonomia International collaborated with the neurologists at South Shore Neurologic
Associates in New York and Sjögren’s researchers at SUNY Buffalo. We looked at the records of all
of South Shore Neurologic Associates’ patients over the past year who reported either dry eye or
dry mouth symptoms, plus some kind of other autonomic problem, who didn’t have an
identifiable cause (meaning their dysautonomia was “idiopathic”), and who didn’t have the SS-A
and SS-B antibodies doctors common rely upon to diagnose Sjögren’s. Out of 95 idiopathic
dysautonomia patients included the study, we found that 41% of them had one or more novel
early Sjögren’s antibodies (salivary protein-1 [SP-1], parotid secretory protein [PSP], and/or
carbonic anhydrase-6 [CA-6]). Then we looked at the symptoms found in the antibody positive
patents compared to the symptoms in the antibody negative patients. They essentially had the
same symptom profiles, but the antibody positive patients were more likely to have constipation.
Q: Is Sjögren’s common in dysautonomia patients?
A: Sjögren’s is the second most common cause of autonomic neuropathy, after diabetes, and has
been associated with postural orthostatic tachycardia syndrome, orthostatic hypotension,
orthostatic intolerance, autoimmune autonomic ganglionopathy, gastroparesis, and other forms
of dysautonomia. In fact, the dry eye that Sjögren’s is well known for is a symptom of
dysautonomia, since the tear glands are controlled by the autonomic nervous system. 1 in 10
people who have dry eye have Sjögren’s syndrome. Sjögren’s impacts 4 million Americans, but 3
million of them are undiagnosed.
Q: Isn’t Sjögren’s an older woman’s disease?
A: The stereotypical Sjögren’s patients is a Caucasian woman over age 40. However,
Sjögren’s can occur in any race or ethnicity, and 10% of patients are male. While Sjögren’s
is not as common in children as it is in adults, it can occur at any age. The youngest novel
Sjögren’s antibody positive patient in our study was 13. Younger Sjögren’s patients tend
to present with different symptoms than older patients, with more neurological
symptoms and less dryness. The dryness usually develops slowly over time as the
disease progresses.
The current diagnostic criteria for Sjögren’s were developed based on studies of older
patients who have advanced/severe dryness associated with their Sjögren’s. Many experts
now agree that the current diagnostic criteria are not catching patients who are at an
earlier stage of the disease, who tend to be younger and have less severe dryness, when
you may actually be able to prevent some of the long term damage from occurring. People
diagnosed with Sjögren’s in their 50s have probably been dealing with it for 20-30 years
before they were “sick enough” to get diagnosed.
Neurologic Complications
A PRIMER ON THE NEUROLOGICAL COMPLICATIONS OF SJÖGREN’S SYNDROME
Neurological complications may affect 10- 20% of those with Sjögren’s disease and range from cognitive difficulties to burning toes and feet. Introduction to the Nervous System The nervous system is […]
www.hopkinssjogrens.org
complications/
Neuro-Sjögren: Peripheral Neuropathy With Limb
Weakness in Sjögren's Syndrome
Objective: Sjögren's syndrome is a heterogeneous inflammatory disorder frequently involving peripheral nerves with a wide spectrum of sensory modalities and distribution patterns. The objective of this cross-sectional study was to determine ...
www.ncbi.nlm.nih.gov
Small Fiber Neuropathy in Sjogren's Syndrome: A Review
review
Immunoglobulin Injections May be Effective for Peripheral Nerve Damage in Sjogren’s
Patients, Study Says