I think this is a reason the name. Although cast steel is also produced by pig iron, but cast steel has lower content of carbon element. So, scientifically speaking, if the carbon content is upper 2%, then it should be called as cast iron, but if lower than 2%, then it should be called as cast steel.
Depending on the type of dementia, the person's behavior may eventually become out of control. The person may become angry, agitated, and combative or clingy and childlike. He or she may wander and become lost. These problems can make it difficult for family members or others to continue providing care at home.
When the disease is in full swing and symptoms are severe, the person with schizophrenia can't tell what's real and what's not. This happens less often as they get older. People with the condition usually aren't aware that they have it until a doctor or counselor tells them. They won't even realize that something is seriously wrong. If they do happen to notice symptoms, like not being able to think straight, they might chalk it up to things like stress or being tired. If you're concerned that you or someone you know is showing signs of schizophrenia, talk to a doctor or counselor.