Koro is widely believed to be a culturally localised delusion. But a theory that it's a fight-or-flight reflex might be corroborated by studying traditional healing treatments in Indonesia.
In countries where health systems are limited, collaboration between traditional healers and health professionals may help fill the gaps.
In rural areas where there are often fewer healthcare professionals available, traditional healers can have a role to play in promoting HIV treatment.
Africa's complex and seemingly insurmountable social and economic problems are a golden opportunity to demonstrate the value that research can bring. Scientists need to rise to the challenge.
Newly proposed regulations in South Africa that would change the way traditional healers operate have come under fire.