Dark Spots

• Dark spots on the face, shoulders, chest or back may be symptoms of blackheads. Blackheads, also known as open comedones, develop when oil secretions and dead skin cells block pores and hair follicles. When the comedones are open to the surface, they flatten and darken with natural oxidation. Blackheads get their name from the hard dark plugs that form within the pores and hair follicles.
  
  

Low Self-Esteem and Depression

• Low self-esteem and depression may also be symptoms of blackheads. According to the American Academy of Dermatology (AAD), many of those who suffer from acne, an inflammatory skin condition caused by the onset of blackheads, often experience symptoms of low self-esteem and depression. Some may choose to miss school, work or outings due to the low self-esteem they suffer. Occasionally, low self-esteem may turn into depression and affect a person to the point of contemplating suicide. The AAD states that some studies indicate teens with bad acne often consider suicide. To increase self-esteem, a dermatologist may be consulted to help relieve blackheads and the onset of acne or scars.
  
  

Acne

• Acne is a condition of blackheads that develops when bacteria mix with oil secretions and dead skin cells. According to the University of Maryland Medical Center, acne is an inflammatory skin condition caused by blackheads. Pores and hair follicles may become blocked and inflamed due to an over-production of oil and dead skin cells. Acne isn't a serious condition; however dermatological treatments may avoid scarring caused by pimples and cysts. Acne may develop from blackheads found on areas such as the nose, forehead, cheeks, chin and back.
  
  

Noticeably Large Pores

• Noticeably large pores are a condition of blackheads. Pores play a vital role by providing oil, which is essential for healthy skin. The secreted oil helps keep skin soft and hydrated; however, when the pores become dilated, infected and clogged with oil, they become noticeably larger by the black plugs that form within them. It may not be possible to shrink large pores; however, it is possible to make them less noticeable by clearing up blackheads with gentle soap, water and light exfoliation.