Justifying Bad Behavior Because of Mental Health Condition

[Nomad]

Some people behave rudely, they speak harsh works and later they try to defend it saying they were experience high stress, depression, anxiety o have certain mental health condition. Do you think it is good to justify your bad behavior because of your mental health conditions. Do you think it is appropriate to take excuses for your mental health conditions?
I have a clear thought around this issue: Just because your pain is understandable dopes not mean your mean behavior is also acceptable.
What do you think?