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However, hives can also develop in response to: Infection Extreme temperature changes Sun or sweat exposure Stress and anxiety Hormone changes Physical stimuli like pressure, vibration, or sunburn Medical procedures like laser hair removal So in rare cases, the heat, vibration, or pressure from a laser hair removal treatment can trigger the release of histamine and a hive-like reaction

If you have a medical condition where you are unable to absorb sufficient B12 from your diet, you will need regular B12 injections every month to stay healthy

Deficiency can lead to a wide spectrum of hematologic and neuropsychiatric disorders that can often be reversed by early diagnosis and prompt treatment

Give the injection slowly and evenly

A further injection bimonthly thereafter