Rashes are irritations that appear on the skin. There are different types, depending on the colour and the texture that they present as well as the causes. The most common are contact dermatitis, which appears as a reaction of skin contact with certain products (from soaps, to materials such as latex or rubber); seborrheic dermatitis, a harmless rash that manifests itself with red areas and flaking, especially on the face and torso, usually caused by stress or the use of lotions or soaps that contain alcohol. In addition, there are numerous conditions that show skin rashes as symptoms: childhood diseases such as chickenpox or measles; herpes zoster virus; psoriasis and eczema; insect bites or reactions to certain medications. Treatment for skin rashes depends on the causes, and can range from creams to oral medications.