<unk>  is most frequently seen in the highland areas of Africa, India, and Central America. The highest prevalence is seen in Uganda, Tanzania, Kenya, Rwanda, Burundi, Sudan, and Ethiopia. A recent review has summarized the global distribution of<unk> . In some areas of Ethiopia, the prevalence is as high as 4%. The incidence of<unk>  increases with age, likely due to cumulative exposure to irritant soil. It is very rare to see<unk>  in the 0–5 year old age group, and the incidence rapidly rises from 6 to 20 years of age, with the highest prevalence after 45 years of age.<unk>  is most commonly seen in higher altitude areas with volcanic soil, and it is estimated to affect 4 million people worldwide. Productivity losses associated with the disease are significant. In Ethiopia (where 1.6 million people are estimated to be affected), the condition is thought to have caused US $200 million in lost productivity per year in 2004.
Podoconiosis
Silica granuloma
Beryllium granuloma
Pasteurellosis
Spongiosis
Pulmonary talcosis
Contact granuloma
Silicone granuloma