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Vitamin B12 deficiency results in megaloblastic anemia, GI lesions, and neurologic damage (which begins with an inability to produce myelin and is followed by gradual degeneration of the axon and nerve head)
doi: 10.1038/nm.3761 36 JallSSachsSClemmensenCFinanBNeffFDiMarchiRDet al
Symptoms and traits to look out for include: a hard, raised bump blackish-blue, dark brown, or reddish-blue in color (sometimes the same tone as the skin) continuously growing in size and shape, especially after 2 to 3 weeks Hutchinsons melanotic freckle (aka lentigo maligna melanoma) Hutchinsons melanotic freckle is an invasive skin cancer that develops out of lentigo maligna, a type of melanoma in situ
[44] A number of disorders may increase the pituitary's GH output, although most commonly it involves a tumor called pituitary adenoma, derived from a distinct type of cell (somatotrophs)
Halo nevi These are melanocytic nevi that appear to be under immune attack from the host with destruction of melanocytes
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