The author has analysed 339 patients with extensive burns admitted to a teaching hospital and found them to be most common in poor socioeconomic groups with low incomes, poor housing and illiteracy. Thermal injuries afflicted 89 per cent of the patients and were generally accidental and occurred in homes with floor-level cooking: chemical and electrical burns (the remaining 11 per cent) were uncommon. Kerosene pressure stove accidents were a common cause of thermal burns and occurred in 65 per cent of the patients. These were reported in both sexes but were 3.5 times more common in females. Mishandling of kerosene pressure stoves was the commonest cause and occurred in 65.7 per cent of the patients and the next most common cause was wearing loose garments. Kerosene pressure stove accidents occurred commonly in the age group 16–35 years and were rare in other age groups. These burns were relatively more extensive, deep and carried a high mortality.