Is there a disorder for having low self-esteem?

Whilst low self-esteem does not make up a condition alone, in combination with other symptoms it can point to conditions including (but not limited to) anxiety, depression, bipolar disorder and personality disorders.

Do Bipolars have low self-esteem?

In bipolar disorder, moods swing from depression to mania, or a state of elation, and often leave people with low self-esteem. These feelings can start from being self-conscious about the condition and progress to feelings of lower self-worth.