Initial response time also depends on: Severity of the B12 deficiency Frequency of injections Underlying health conditions Absorption and metabolism differences If youre getting your first B12 shot, your provider may start you on a more aggressive schedule, such as weekly injections until your levels are normalized
Sensory Symptoms Numbness, tingling, or pins and needles (paresthesia) typically distal/stocking-glove in polyneuropathy Burning pain, allodynia, hyperalgesia common in small-fiber predominant neuropathy and CIDP Loss of proprioception and vibration sense sensory ataxia, positive Romberg sign Loss of pain/temperature sensation (small fiber) risk of unnoticed wounds Motor Symptoms Distal muscle weakness (foot drop in peroneal neuropathy, wrist drop in radial neuropathy) Atrophy of intrinsic hand muscles (ulnar/median neuropathy) Hyporeflexia or areflexia (ankle jerks lost early in length-dependent polyneuropathy) Fasciculations in severe axonal loss Autonomic Symptoms Orthostatic hypotension, dizziness on standing Gastroparesis, constipation or diarrhea, nausea Neurogenic bladder (hesitancy, retention, incontinence) Anhidrosis or gustatory sweating Sexual dysfunction
Estimates suggest only about 50% or less is absorbed by the body
It helps our team seamlessly customize your care
CMS Article A56681 notes that DSNRB procedures are erroneously referred to as TFESI in some practice environments
