Answer:
Cyclothymia
Explanation:
Cyclothy-mia is a mood disorder. It is related to a mild mood disorder. In this disorder, the mood swings between the short period's depression and hypo-mania. The major and the low mood does not meet the criteria of the major severe depression. Around 0.4% to 2% population get cyclothy-mia disorder.
Symptoms:
Lizzie experiences the ups and downs in her mood which reflects that she is diagnosed with Cyclothy-mia.