Hi and welcome,
I gather you've not as yet been diagnosed with anything specific since your asking the same question in other communities....
Romberg test information:
"Stance and Gait
Steven McGee MD, in Evidence-Based Physical Diagnosis (Third Edition), 2012
b Definition of Positive Romberg Sign
One problem with Romberg sign is that various authors define the positive test differently: Some state that it is the increased swaying that occurs when the eyes close, while others require the patient to be on the verge of falling down.28 Increased swaying alone seems inadequate, because most normal persons sway more when they close their eyes, as do patients with vestibular, cerebellar, and Parkinson disease.30
The best definition of a positive Romberg sign is inability to stand for 60 seconds with the feet together and the eyes closed. In one study, every healthy person and over half of the patients with cerebellar ataxia could maintain this position for 60 seconds, whereas half of the patients with sensory ataxia lasted only 10 seconds before beginning to topple over.31"
"The Romberg’s test can be positive under 2 circumstances: genuinely positive i.e., when the person has ataxia and false positive report. The reason for the occurrence of positive report under both situations is described below:
Causes of Positive Romberg’s Test Result
Inherited Causes for Positive Romberg Test:
Autosomal dominant sensory neuropathy with scoliosis and deafness
Autosomal dominant sensory ataxic neuropathy
Posterior column ataxia and retinitis pigmentosa
Autosomal dominant posterior column ataxia
Cerebellar atrophy of late onset
Ataxia associated with progressive external ophthalmoplegia
Biemond syndrome (posterior column ataxia)
Metabolic and Toxic Causes for Positive Romberg Test:
Vitamin E deficiency
Vitamin B12 deficiency – subacute combined degeneration of the cord (SACD)
Drugs – Taxol, Cisplatin, semi synthetic penicillin
Immunological and Other Causes of Positive Romberg Test:
Idiopathic sensory neuropathy
Tabes dorsalis (classical cause)
Paraneoplastic sensory neuropathy
Guillain- Barre syndrome (Miller Fischer variant)
Compressive lesion involving dorsal columns
Multiple hamartoma and neoplasia syndrome (Cowden Syndrome)
Causes of False Positive Romberg’s Test:
Romberg’s test is a simple diagnostic test which is sensitive in nature and used to pinpoint to sensory ataxia in a patient with balance and postural issues. It is indicated in patients with imbalance, dizziness, and falls."
You said "I've had fasiculations for quite some time now, and they preceded the symptoms by a while. They are also all over my body." Fasiculations all over the body would generally be a red flag 'pointing away' from neurological conditions like MS because of the way symptoms caused by lesions in the brain and or spinal cord present and develop over time....
To be honest i can't think of anything serious that would just cause a positive Romberg's and none of the other inter-related symptoms, what did your test results uncover?
Hope that helps.....JJ