Causes of Hair Loss in Children. There are many reasons kids' hair might fall out abnormally or excessively. The following conditions are the most common causes of hair loss in children: Tinea capitis. The most common cause of hair loss in children is an infection known as tinea capitis.
Bone Marrow and Blood Formation. Bone marrow is the spongy tissue that fills the cavities inside your bones. Most of your blood cells are made in your bone marrow. The process by which blood cells are made is called haemopoiesis.As an infant, haemopoiesis takes place at the centre of all bones. In later life, it is limited to the hips, ribs and breastbone (sternum).he process by which blood cells are made is called haemopoiesis. As an infant, haemopoiesis takes place at the centre of all bones. In later life, it is limited to the hips, ribs and breastbone (sternum).
This short life span necessitates the process erythropoiesis, which is the formation of red blood cells. All blood cells are formed in the bone marrow. This is the erythrocyte factory, which is soft, highly cellar tissue that fills the internal cavities of bones. Human Bone Marrow.