Simone Triangle

Simon's Triangle is an area of ​​skin located on the abdomen and thighs, bounded by lines that connect the upper anterior iliac bones and other points. This is a rather interesting and important area of ​​our skin, because it is in the area where prodromal rash may appear in people who were vaccinated against smallpox in infancy or childhood. If a person has Simon's triangle, then this means that their skin is ready to develop a rash and fight the infection that causes smallpox.

Simon Triangles are formed because the human immune system contains special cells known as “memory cells” that produce antibodies to fight various infectious diseases. If a person has been vaccinated against smallpox, then these memory cells are in a state of readiness and can quickly respond to the appearance of an infection. However, if a person does not have Simon's triangle, then his immune system is not ready to fight such infections, which can be very dangerous.

One of the main ways to check whether a person has Simon's triangle or not is to visually inspect their skin. You need to find two lines coming from the superior anterior iliac spines, and then find the points where they intersect with