Detailed answer

Blackheads, also known as open comedones, are common types of acne lesions that occur when pores become clogged with excess oil, dead skin cells, and bacteria. They are not directly related to contact dermatitis, which is a skin condition characterized by redness, itching, and inflammation caused by an allergic reaction or irritant. Contact dermatitis is often triggered by specific substances that come into direct contact with the skin, such as certain cosmetics, soaps, metals, or plants. Although acne can sometimes coexist with contact dermatitis, they are distinct conditions with different causes and symptoms. It's important to consult with a dermatologist to accurately diagnose and treat any skin concerns.