Vitamin C deficiency and the injection of foreign proteins can cause a high blood histamine level, leading to capillary fragility and venular bleeding.

PMID: 

Med Hypotheses. 2004 ;62(4):533-6. PMID: 15050101

Abstract Title: 

Elevated blood histamine caused by vaccinations and Vitamin C deficiency may mimic the shaken baby syndrome.

Abstract: 

The findings of subdural hematoma and retinal hemorrhages in infants, without any documented history of major trauma, do not always indicate child abuse. A combination of ascorbate depletion and the injection of foreign proteins can cause a very high blood histamine level, leading to capillary fragility and venular bleeding. This can be prevented by the administration of vitamin C.

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