How to address my multiple undergrad transfers in graduate admissions? I'm kind of embarrassed to talk about this, but I've attended quite a large number of schools throughout my undergraduate career. 6 schools, in fact. Most of these schools I attended for 12 or fewer credits- I was dealing with an undiagnosed chronic physical illness, which I've now totally overcome, but which was disabling at the time. 

I didn't know what I was dealing with then so I kept trying to push through school and having to withdraw from classes/schools and re-enroll somewhere else. I'm doing much better now, have brought my total GPA up to 3.52 (with a strong upward trend), and have a 4.0 GPA in my major (psychology). I'm studying hard for the GRE's and I trust that my recommenders will be able to provide strong recommendations for me. I know that my GPA could be better, but what I'm mostly worried about is the large amount of transfers on my transcript.

How should I deal with this? Should I mention in my personal statement that I was dealing with chronic illness and have overcome it? I'm worried that admissions committees will think I'm oversharing, but I feel that something as weird as 6 undergraduate institutions requires an explanation. I'm hoping this won't disqualify me from PhD programs, since I really love research in psychology and would do anything to pursue it further.

From comment: One of the schools was just somewhere I took a single course at while in high school. I left two of the schools because I lost the merit aid I needed to afford attendance due to withdrawing, and one because it was an online school and I was unhappy with the quality of the education I was getting there. I then went back to my local community college and started over, and transferred to my state university from there. I have research experience, and am planning on getting some more after undergrad. I'm hoping I can overcome this but I'm really scared.
On first appearance, this does seem like a significant negative of your application. I have a couple suggestions for you.

One, make sure you follow the graduate school's instructions on submitting previous school's transcripts. Some graduate applications may ask for only the receiving degree transcripts.  If some of the previous five schools' credits did not transfer and were not related to your degree, you might not have to mention those at all. Be careful though, as not including them when you are supposed to is considered a misrepresentation of yourself, and could invalidate your application (and even potentially your later graduation). On the other-hand, you may be asked to provide each and every full transcript from each of your previous schools.  

If you do need to include the transcripts from each of the six schools (or they do all appear as transferred credits), I would highly recommend you include an explanation in your application.  Their biggest concerns will be if this number of school changes indicates an inability to commit, the tendency to give up rather than work hard to learn something difficult, and/or the presence of a serious level of indecision about your direction.  These are all serious issues for the successful completion of a PhD, in which you can expect long and difficult work on the same subject. You do not need to give much detail about your medical issues, but be sure that your explanation sufficiently explains the information given to them. For example, repeated withdrawals and restarts or a longer completion time makes clear sense in the context of a recurring medical problem, but why six schools and not one or two? Medical withdrawals and restarts at the same school would seem like a more reasonable option, which could lead them to doubt your justification.

Emphasizing your continued upwards gpa trend and your commitment to the area of psychology over the years will also help combat some of these concerns. Any out of class research will help you enormously as well as it shows you are willing to spend additional time on the subject, have the potential to succeed at PhD level research in general, and have experience to know you enjoy and are willing to commit to psychology research specifically.