Hi Doctor,,actually my family is very much worried because of my sister s daughter,,she was a healthy born child,,now she is 2years and 9 months,,and becoming very weak day by day,,having very aggressive nature,,not ready to eat any kind of food,,getting fever oftenly,,we did all the blood test(special test)and it shows she is having less vitamin D,,We have seen Dr. Barocha of mumbai hospital and many more doctors but nothing coming out good,,please consult what to do? and where to go?