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[|Human|] Hyperpigmentation of feet and fingers with wrinkling. This condition had persisted for many years with no other health related issues. Just had parathyroid tumor removed. There are no other skin related issues in other areas of the body. May have absorption problem. Persistent anemia has never been investigated. Tried many dermatologists without success. I think it is in
[|AI|]  Hi, Thanks for writing to us. There could be many causes for hyperpigmentation of feet and fingers like acanthuses Nigerians, eczema, vitamin B12 deficiency, Addison's disease etc. Parathyroidectomy may lead to hyperparathyroidism which sometimes not commonly may cause exfoliating dermatitis i.e. Chat Doctor. It would be imperative that you visit a dermatologist nearby to ascertain the diagnosis and start an appropriate treatment. Take care