Our immune system is very effective at fighting and killing unwanted intruders such as viruses and bacteria. This helps to keep us safe from disease, despite threats existing all around us. While it is effective at attacking intruders, though, it can also be effective at attacking our own bodies.
Lichen planus is an autoimmune disease, which means the body is being attacked by its own immune system. The condition usually presents as an itchy rash on various parts of the body. The exact reasons for it are little known and more research is being done, although it is a fairly rare condition so funding is limited.
Regardless, we have still been able to identify a number of factors that can act as a trigger for the condition.
Cause #1: Vaccines
Vaccines are among the most effective factors that contribute to the standard of living we can enjoy today. They help to protect us and our children from potentially fatal diseases, and infant mortality rates have plummeted since vaccines became available. They have even helped in the eradication of some diseases altogether.
They are not perfect, though, and some people might have negative reactions to them. Some people that have the flu vaccine might find that it causes them to develop lichen planus. Regardless of the potential risks, though, the negatives of vaccines are far outweighed by the positives.