Hello,
Sudden uncontrolled outbursts of anger commonly occur due to
depression,
anxiety, addictions, mental health problems, mistrust & low self-esteem.
She should visit a
Psychiatrist or a Counselor. She needs to be physically examined, she needs medications (antidepressants, anxiolytics, etc).
It looks like she is suffering from IED(Intermittent Explosive Disorder), a medical condition.
This condition is associated with a recurrent aggressive outburst of anger, hostility or being impulsive.
Other condition that can cause this is
Bipolar disorder, she needs the help of medicines, relaxation &
behavioral therapy & anger managing counseling.
Her treatment will depend upon the severity of the pathology detected.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Nupur K, General & Family Physician