Whiteheads and blackheads, both symptoms of the skin condition acne, commonly appear on the face and shoulders, but they may also develop on the trunk, arms, legs, and buttocks. They are most common in teenagers but can occur at any age, even in infants. Treatment for whiteheads and blackheads depends on the severity of the condition. Treatment may include lotions or gels placed on blemishes or sometimes entire areas of skin, such as the chest or back (topical medications). Oral medications, such as antibiotics, may be prescribed. Blackheads is caused when excess skin oil, sebum and congesting toxins are expelled through your skin from the blood and lymph fluid that supplies your skin with nutrients. These congesting toxins combined with skin oil and sebum clogs your pores causing blackheads, whiteheads, and full blown acne. Dirt also plays a big role in developing skin blackheads. The dirt stored on the face or other parts of body make the bacteria to develop. The dirt with oily skin makes things even worse. Although food id thought not to be the cause of blackhead but doctor believe that there may be some role of food in it too.