Answer:
a.borderline personality disorder
Explanation:
Borderline personality disorder is mainly associated with issues in regulating emotions and feeling emotions too intensely. These intense emotional periods can be of extended times rather than of short moments making it difficult for the individual to have a stable emotional state affecting their personal relationships due to extreme changes in mood. Also, depression is a known symptom of this disorder which can cause chronic feelings of emptiness and boredom and if left untreated then may lead to suicidal tendencies as well. Also, the female to male ratio is 3:1. Hence, the answer is borderline personality disorder.