Across West Africa, crops have failed and food prices are rising. Without a reliable food source, children are simply not getting enough food to eat.
More than a million children could face life-threatening malnutrition if we don't take immediate action.
Chad is just one of the countries affected. This photo story explains why child hunger is happening there, what we're doing to stop it escalating, and how you can help us.
A severely malnourished boy lies near his mother at a UNICEF-supported feeding centre in Mao, Chad. He's in one of the regions worst affected by the food shortage, where more than 15 per cent of children under 5 are ill from hunger.
© UNICEF/NYHQ2011-2173/Patricia Esteve