Hello teachers!
I need grammar check on the essay below.
Hope there aren't many errors.
Thanks in advance!
------------------------------------------------------------

What is trauma?

The term "trauma" originally meant that an injury to the body caused by violence, heat, electricity, chemicals or similar agent. However, in 1980, the American Psychiatric Association formally designated the term trauma as a kind of psychopathy. It's due to the fact that the number of Vietnam veteran have been increasing who suffered from mental disorders after serving the War. Nowadays, trauma generally indicates psychological disorder which is the result of extremely stressful events that shatter your sense of security, making you feel helpless and vulnerable in a dangerous world.
Hi,
What is trauma?

The term "trauma" originally meant that an injury to the body caused by violence, heat, electricity, chemicals or a similar agent. However, in 1980, the American Psychiatric Association formally designated the term 'trauma' as a form kind of psychopathy. This was It's due to the fact that the number of Vietnam veterans who suffered from mental disorders after serving in the war had been increasing . Nowadays, trauma generally indicates a psychological disorder which is the result of extremely stressful events that shatter a person's your sense of security, making them feel helpless and vulnerable in a dangerous world.

Note the word 'trauma' is still used for severe physical injuries, I think.

Best wishes, Clive
Thank you for your advice and the note!