hi i had gone through your query and understand your concerns. i would come up with the possibility of VITILIGO is the cause for your friend sufferings but not the calcium deficiency. Vitiligo is an autoimmune disease may associatid with other autoimmune disorders, presence of antimelanin antibodies and lymphocytic infiltrate in early lesions. Family history is available in a quarter or more of patients treatment option; -i advise you taking Homeopathic medicines gives safe and permanent cure for your friend vitiligo complaints -selection of remedy in homeopathy is based upon the theory of individualization and symptoms similarity by using holistic approach. This is the only way through which a state of complete health can be regained by removing all the sign and symptoms from which the patient is suffering. I hope this is helpful for you, thank you -The aim of homeopathy is not only to treat vitiligo but to address its underlying cause and individual susceptibility. - As far as therapeutic medication is concerned, several medicines are available for vitiligo treatment that can be selected on the basis of causation,location, sensation, modalities and concomitant of the complaints. - For individualized remedy selection and treatment, the patient should consult a qualified homeopathic doctor in person.