What does the suffix -penia indicate?

The suffix -penia is derived from Greek, where it indicates a deficiency or abnormal reduction in number. In medical terminology, it is commonly used to describe conditions characterized by a decrease in particular cell types or substances in the body. For instance, leukopenia refers to a reduced number of white blood cells, while thrombocytopenia indicates a lower than normal platelet count. This suffix helps healthcare professionals communicate specific conditions related to insufficient levels, making it crucial for diagnosing and understanding various health issues.