Thanks for your question on Health Care Magic. I can understand your mother s situation and problem. Your mother is having chronic lung infection. Tuberculosis and fungal infection are common cause for this. She is also having weight loss despite of tuberculosis treatment. So possibility of fungal infection is more. For this, she needs to get done sputum fungal culture and sensitivity. Culture report will isolate the causative fungus and sensitivity report will guide us about effective antifungal drugs. Another possibility is drug resistant tuberculosis. So don t start antifungal drug without proper investigations. Consult pulmonologist and discuss all these. Hope I have solved your query. Wishing good health to your mother. Thanks.