Discuss something / Discuss about something
UsageDiscuss normally takes a direct object and does not need about. Use discuss the issue or talk about the issue.
Discuss something
Use when
You mean talk about or consider a subject; discuss takes the subject directly as its object.
Example
“The committee will discuss the proposal tomorrow.”
Discuss about something
Use when
Avoid this form in standard formal English; use discuss something or talk about something.
Example
“Replace 'discuss about the proposal' with 'discuss the proposal'.”
Quick check
discuss about, discussed about, discussion the issue when discuss is meant
Usage note