The abnormal pap smears are related to prior exposure to a virus called HPV
. This is because you are human being who has EVER been sexually active - the risk of exposure in your lifetime is probably about 80% - but you probably know all of this.
You might never completely clear the virus, even though pap smears can be normal for some period of time. In fact, some women have "reactivation" of the virus at a later point in life, and this often leads to confusion.
In your case, there might some correlation with periods of time when your immune system is compromised. I would address this with your doctor in terms of exploring whether the skin findings might be related to a systemic autoimmune disease
. The types of specialists that are experts at these diagnosis' include Internal Medicine doctors and Rheumatologists.
I hope this helps!!