What is a deficiency causes petechiae formation?

Petechiae formation can be caused by a deficiency in vitamin C, which is essential for collagen synthesis and vascular integrity. This deficiency can lead to weakened blood vessels, resulting in small bleeding spots under the skin. Additionally, conditions like thrombocytopenia, related to deficiencies in platelets or clotting factors, can also result in petechiae. It's important to address any underlying deficiencies to prevent further complications.