Dear customer, The condoms become prone to fail when their structural integrity is compromised.After the expiration date of latex condom is over, its latex starts to dry out making it brittle. With more drying, the flexibility and strength of the condoms keeps getting worse. The older the condom, the more likely it is to break. Even the spermicides used in some condoms become less effective after the expiry date. This is because the substance that kills sperms loses its lubrication and loses its effectiveness. The chances of std infection, unwanted pregnancy and irritation may be there if you use the expired condoms. If your symptoms persist and worsens then you should have the smear examination and physical examination done by doctor/dermatologist or std specialist to rule out any std infection. Thank you