The broader term muscle spasm may include cramps, fasciculations, spasms related to spasticity, and sustained hypertonic states
These include Stomach (gastric) cancer Duodenal cancer Esophageal cancer Ampullary cancer Structural and vascular issues Sometimes the problem isnt a sore or a tumor, but the plumbing of the digestive system itself

It is also important to be aware of symptoms that may suggest either worsening B12 deficiency or poorly controlled blood glucose, and to seek prompt medical advice if you experience: Persistent fatigue, breathlessness, or pallor (possible anaemia) Tingling, numbness, or weakness in the hands or feet (possible B12-related neuropathy) Unsteadiness when walking, or changes in memory or thinking (possible signs of more severe B12 deficiency requiring prompt assessment) Increased thirst, frequent urination, or unexplained weight loss (possible hyperglycaemia) If you think you may be experiencing a side effect from a medicine for example, symptoms of B12 deficiency that you believe may be related to metformin you or your healthcare professional can report this via the MHRA Yellow Card scheme at yellowcard.mhra.gov.uk
Depending on your outcomes and how well you tolerate the medication, your prescriber may recommend you move up to 2ml per week, or 1ml twice per week
Intramuscular injections offer a direct and efficient means of correcting deficiencies, aiming to improve overall health and sustain neurological function