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Generalised hyperpigmentation in vitamin B12 deficiency.

Gouranga Santra, Rudrajit Paul, Sumit Kr Ghosh

    The Journal of the Association of Physicians of India
    |April 11, 2015
    PubMed
    Summary

    Hyperpigmentation can be a rare initial sign of vitamin B12 deficiency, particularly in Indian vegetarians. Prompt diagnosis and vitamin B12 supplementation can reverse skin changes and prevent neurological issues.

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    Area of Science:

    • Internal Medicine
    • Nutrition
    • Dermatology

    Background:

    • Nutritional deficiencies, including hyperpigmentation, are common in developing countries like India.
    • Vegetarian Indian women are particularly susceptible to vitamin B12 deficiency, which can manifest in various ways.
    • Hyperpigmentation as the primary symptom of vitamin B12 deficiency is infrequently observed.

    Purpose of the Study:

    • To report a rare case of generalized hyperpigmentation as the initial presentation of vitamin B12 deficiency.
    • To emphasize the importance of considering nutritional deficiencies in cases of unexplained hyperpigmentation.
    • To highlight the varied clinical presentations of vitamin B12 deficiency.

    Main Methods:

    • A case study of a 45-year-old Hindu vegetarian female presenting with generalized hyperpigmentation.
    • Clinical examination revealing anemia and peripheral neuropathy.
    • Laboratory investigations confirming vitamin B12 deficiency.

    Main Results:

    • The patient's hyperpigmentation, anemia, and peripheral neuropathy improved significantly following vitamin B12 supplementation.
    • This case underscores hyperpigmentation as a rare but possible manifestation of vitamin B12 deficiency.

    Conclusions:

    • A high index of clinical suspicion is crucial for diagnosing vitamin B12 deficiency presenting with hyperpigmentation.
    • Physicians in India should be aware of the diverse manifestations of vitamin B12 deficiency.
    • Early diagnosis and treatment of vitamin B12 deficiency can prevent severe complications such as dementia and neuropathy.