Everybody is different in their mental and physical behavior while trading.
I'll only talk about the physical aspect because the mental side is too complex and often results in debates but I do understand there's a connection between the mental with physical. Thus, if someone has any of the below issues...they need to see a doctor or professional that specializes in these types of stress related ailments.
Some people actually have a physical change in their body while trading such as sweating, increased blood pressure, increased heart rate, uneasy stomach, headaches, back problems, loss of appetite, increased appetite and so on. Then when their trading day completes...the physical changes slowly goes back to normal and then it starts all over again the next trading day.
Those particular individuals need to do something soon (not later) to be able to manage that stress while trading because if they don't...trading will no longer be an option for them. Simply, the physical problems will transverse from short term into chronic and that will then have long term consequences or worst...cementing the connection between mental and physical.
Stress can kill.