T.R.B.Tone XT, 3 Times/day, for 3 weeks. Have iron rich food for 2 months regularly. A leaf called ' kulekhara Saag' or hygrophilia' available in market which immensely helps to increase in hemoglobin level. Have the cleaned leave in raw form or boil it in water and drink the boiled water as well as consume the boiled leaves too. 3 times/day. Have antacid along once a day. Ulcerations are occurring due to severe fall of Hemiglobin. Need to improve Hb level immediately. Lack of taste sensation and roughness of tongue are common in such situations. Contact Hematologist for faster improvement.

If father is suffering from deficiencies , may b vitamins and other vitals which r required for his age  this happens mainly bcos of reduced intake of diet and this is again bcis of burning sensation caused by desquamation , this is a cycle which needs to b broken        The lesions can b combination of desquamations super imposed by autoimmune lesions like lichen planus and also candidiasis

It's because of low haemoglobin levels of blood. Tell him to take iron supplements and to consult to doctor to increase his hb levels. 7 % hb is severe anaemia and he needs to consult doctor as soon as possible. Mouth ulcers and rashes are because low hb levels. As soon as his hb increases he will not be having oral rashes in future. Tell him not to take any stress and take full 8 hours sleep. Tell him to consume fruits like citrus or lemon, awala, beet and apple. Tell him to consume multivitamin tablets.