One 2006 study found that 91 percent of new mothers report having disturbing or intrusive thoughts.

CNN: Postpartum depression: When moms feel out of control

The intrusive thoughts do not all go away, but they do not bother me anymore.

BBC: Gillian waited years to get the correct diagnosis and help

However, earworms did seem similar to intrusive thoughts in relation to attempts to banish them.

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New moms tend not to get nearly as much sleep as their minds and bodies require, and any sleep expert or doctor will tell you that prolonged sleep debt leads to hallucinations, a loss of perspective, moodiness and lo and behold, intrusive psychotic thoughts.

CNN: When motherhood becomes a nightmare

The huge panorama of problems, issues, untoward thoughts, negative emotions, conflicts, sensory dysphoria, interpersonal ineptitude, and intrusive images that bring most people to therapists far outweigh the relatively small number of complaints that are thus far amenable to empirical methods and manualized therapy.

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