Hi welcome to the health care magic In diabetes chances of infection are more... Opportunistic fungal infection chances also present So detail clinical history taken work up done in following ways.... -Chest x ray -Auscultation -CBC -Sputum examination esp gram and AFB stain If x ray shows consolidation than pneumonia can be there and antibiotic given... You might be kept under observation in hospital for three to five days and if needed intravenous medication can be given For pain paracetamol will be given and if pleurisy leads severe unbearable pain than tramadol sos can be prescribed Take care Pulmonologoist consultation advisable for examination