There are numerous skin conditions that can affect people of all ages and skin types, but some are more common than others. Dermatitis, eczema, psoriasis, rosacea, acne, hives, fungal infections, warts, alopecia areata, and cold sores are among the most common skin conditions. Acne is a skin condition characterized by the presence of pimples, and whiteheads, while eczema causes red, itchy, and inflamed skin.   Psoriasis causes scaly and thickened skin patches, and rosacea leads to redness and visible blood vessels on the face. Hives are itchy and raised welts on the skin caused by an allergic reaction, and fungal infections can cause ringworm, athlete's foot, and jock itch.   Warts are small, hard growths caused by a virus, and cold sores are caused by the herpes simplex virus. Dermatitis is a condition that causes itchy and inflamed skin, and it can be caused by a variety of factors, such as allergies and irritants. While these conditions can be uncomfortable and sometimes painful, there are various treatment options available to manage them.