👉 Colias are a type of bacterial infection that can cause inflammation and swelling in the skin. They are typically caused by bacteria such as Staphylococcus aureus, which is found in the intestines and rectum. Colias can be caused by various factors such as improper hygiene practices, poor diet, or exposure to certain substances like certain medications. Treatment for colias usually involves applying topical antibiotics or using oral antibiotics if prescribed by a healthcare professional.