👉 Chalazion, or a pustule, is a type of skin rash that can occur in various parts of the body. It occurs when the skin around an opening on the skin becomes inflamed and red. Chalazions are often caused by infections or inflammation from other conditions such as allergies or autoimmune disorders. They may appear as small blisters or pustules, which can be itchy or painful. Treatment for chalazion typically includes applying a ointment or