what i can tell from the above mentioned featureds is taht u suffer from nutrional disorder which results in dyschromic disorders of skin lso u stated that u have d3 deficiency , how did u kow yhat ? had u investigated bfore for the same , if not then better invwestigate in terms of serum vitamin B12 , haemoglobin levels to check for iron defiency anemia which can be one of the probable factor for dyschromia , increase your intake of citrus fruits - will nbulit your vit amin c levels ,green leafy vegetables, jaggery ,beetroot , iron suppliments - for raising your haemoglobin levels & minerals ,have a balanced diet ,, visit a skin exper to to have a check on other systemic parameters as to rule out the cause of undernutrition like tropical sprue ,pellagra or any inestinal problems where vitamin absorption bcomes an issue ,lastly use sunscreens to avoid pigment getting darker