Ines Mary Angelina
First, as a physician. I would like to say that if anything you wear (including any form of chastity device) causes harm to the body then its use should cease immediately. Quite often the skin can be irritated either for allergic or abrasive reasons. If this occurs the skin's barrier to infection can break down and resulting infection can become serious or even catastrophic.
In fairness, a belt made of surgical stainless steel will rarely cause allergic reactions, but not so, the various rubber and latex linings that many belts and thigh bands posses. From an ethical point of view, it is the keyholders duty to keep all of us wearers safe and free from harm including our health beyond chastity.
Any abrasions or cuts should be investigated immediately, not least because the thighs and pelvic areas are breeding grounds for fungi and bacteria. If the devices impede circulation in anyway they need to be removed or at least modified and gain the onus ethically should be on the keyholder. Remember the circulation carries the bodies immune components that fight infection and prevention of circulation could lease to immunity compromise in the affected area.
In these regards that my partner is also a medical professional (a nurse) and she examines me daily for issues.
And like Mary, I have become used to the thigh bands and have been able to tolerate them without too much difficulty. My partner does remove the connecting chain for certain exercise, particularly hiking etc. I have not had problems with sitting, lying or studying (something I still enjoy).
In part I disagree that the thigh bands help prevent arousal. However I do agree that they make responses to arousal difficult and thus the arousal fades more quickly than before. Certainly trying to push anything beneath the shied is something i do not think about anymore - though I confess that this used to be an issue. I have also come to believe that there probably is a small fetish component to this even though I think it cheapens the whole reason for us having this shared experience with m partner. I say this because every evening when we finally retire upstairs, the padlock is placed on my bands and the very act of doing this adds that little connection between us. hard t explain.