A congenital maldistribution of FAT tissue. Subcutaneous fat is totally absent from a portion of the body and hypertrophied in the remainder. Another form of lipodystrophy occurs at the site of INSULIN injections, but is much less frequently seen nowadays; the new, synthetic preparations of insulin are pure and unlikely to cause this reaction, which was not uncommon with the older preparations. Occasionally the converse occurs at the site of insulin injections, where the lipogenic action of insulin stimulates the fat cells to hypertrophy. This can also be dis?guring and usually results from using the same site for injections too frequently.