 Collapsing focal segmental glomerulosclerosis, CFSG or CG, is a rare kidney disorder that can lead to end-stage renal disease if left untreated. It is becoming more prevalent in some areas of the world, including western countries, but is also being seen in tropical regions. The condition is difficult to diagnose and treat, with few effective therapies available. Awareness of CFSG slash CG is important for accurate diagnosis and prognostication, especially in developing countries where access to advanced medical care may be limited. This article was authored by Mohammed Mubarak.