Your itch is your original answer to "what's wrong with me?"
Something happened and you didn't get what you expected, the reaction you expected, the love you expected, the TLC you expected. Instead you got something else... And you started to wonder what's wrong with you.
Sometimes people tell you what they think is wrong with you, but mostly you are left to wondering about it... and try to figure out.
Among my students, worthless is predominant. What is YOUR Itch? Here is a link to the articles that talk about the Itch.