Hi dear thanks for asking question. According to history provided by you your father might have hepatitis as fever and bone pain like constitutional symptom present. Do viral marker of your father to rule out viral hepatitis. Following are some suggestion. As your father might have liver hepatitis rest his liver by taking very less oil in diet. Avoid outside food ... Avoid smoking and alcohol if have habit of it. Green leafy salad taken in lunch and dinner. Carrom seed and cumin seed crushed and mixture of these powder swallow with water. Take papaiya seed in lemon juice daily. Udiliv tablet can be taken for few days. Take rest. After month repeat LFT.. Then after if liver enzymes elevated then we will think about other causes and carrier of hepatitis b if needed. Till now follow above instructions and your father will benefit from it. Dr.Parth Goswami