According to American Academy of Family Physicians, can have numerous clinical manifestations such as:

1) Anemia to be specific Megaloblastic Anemia being the most common

2) Decreased haptoglobin levels, high lactate dehydrogenase levels, and elevated reticulocyte count.

3) Easily Fatigue with exertion

4) Palpitation

5) Skin: Skin Pallor, hyperpigmentation

6) Glossitis

7) Infertility

8) Neurological Manifestation: peripheral neuropathy, areflexia, and loss of proprioception 

Reference article:

https://www.aafp.org/afp/2017/0915/p384.html

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