TABLE 3.

Causes of prolonged fever in 40 patients of pulmonary tuberculosis undergoing chemotherapy

	Etiology	Cases (no)
1. Due to direct complication of TB		9
	• Dissent TB with toxemia alone	4
	• Potts disease of spine with abscess	2
	• Loculated empyema	2
	• TB arthritis of hip with abscess	1
2. Due to tubercular hypersensitivity (cold abscess)		5
	• Mediastinal	2
	• Retroperitoneal	2
	• Retro pectoral	1
3. Due to drug resistance		4
	• Fall and rise phenomenon	4
	• Initial drug resistance	1
4. Due to drug reactions		9
	• Streptomycin induced	7
	• INH induced lupus	2
5. Due to other illnesses		13
	• Pyogenic lung infection	6
	• Malaria	3
	• Anemia	2
	• Filariasis	1
	• Amebic liver abscess	1