Seek prompt medical advice if you experience: Severe or rapidly worsening joint pain that significantly impairs function or mobility A hot, swollen, very painful joint with fever this could indicate septic arthritis requiring SAME-DAY emergency hospital assessment Symptoms of severe allergic reaction after B12 injection (breathing difficulty, facial/tongue swelling, widespread hives, dizziness/collapse) call 999 immediately Systemic symptoms such as unexplained weight loss, night sweats, or profound fatigue Neurological symptoms including weakness, numbness, balance problems, or cognitive changes Symptoms affecting multiple joints simultaneously, particularly if symmetrical (both hands, both knees) Morning stiffness lasting more than 30 minutes , which may suggest inflammatory arthritis Your GP will conduct a thorough clinical assessment, including detailed history-taking and physical examination
"but I do find it weird that my B12 is nonexistent and yet my RBC, MCV, and MCH are normal." Low B12 can lead to enlarged red blood cells (macrocytosis)
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Some people cannot absorb B12 from diet due to gastritis or deficiency of a factor that helps B12 absorption from stomach and intestine, others take medicines or substances that depletes B12
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Sciatica pain can feel overwhelming, but it doesnt have to define your life
