Diffuse, non-scarring forms of hair loss are mainly two distinct types.
Firstly, anagen effluvium which is seen a rapid form of hair loss usually after chemotherapy (anti-cancer) drugs were administered.
Secondly, telogen effluvium which is seen after severe, acute or chronic illness, after high fever, after severe emotional stress, after major surgery, due to crash- or liquid- or starvation diets, after delivering a baby, due to certain glandular diseases and due to certain drugs (medicines). There is always a lag time of about three months between the incident and the beginning of the hair loss. Fortunately patients do not become totally bald. As long as the patient recovers from the illness, the hair will re-grow. No treatment is necessary except support to help the patient recover from the original condition.