What's that white stuff on their heads?

When walking around the village, two things are common to see on children: white spots on their head and bloated stomachs. 

The white spots on their head come from poverty, but not directly from poverty as it relates to nutrition.  Bloated stomachs are due to malnutrition, pure and simple.  But the white spots?  What causes that?

The white spots are a fungus (basically a ringworm) that begins with a lack of bathing among the general community.  This causes a very small amount of people in the village to get the ringworm.  The main problem arises from the close contact that village people have with each other.  Rwandans generally sleep five to a double bed, so the close proximity of people sleeping to each other at night combined with sharing sheets and towels makes spreading the fungus much easier. 

You rarely if ever see this with Rwandans in the cities or of Rwandans with any means.  The white spots on the head are a direct marker that these children live in third-world poverty.