The signs and symptoms at an early stage are harder to be seen. At first look,<unk>  seems very similar to any other type of<unk> . However, it differs in how it is caused. A lot of<unk>  has to do with hormones, the amount of oil production in the skin, and genetic predispositions.<unk>  specifically refers to the skin irritation that is formed by excess pressure, heat, and rubbing against the skin. When the skin is constantly rubbed, it initially becomes rough and then starts to develop<unk> -like bumps with continuing irritation like sweating or more friction. If the skin continues to be irritated for a longer period of time, a more serious<unk>  lesion develops that grows in size and redness. They appear as small, red tender bumps called papules. There may be a combination of whiteheads and blackheads that also appear around the area affected, the difference being that whiteheads are closed and clogged pores whereas blackheads are also clogged but open pores. The symptoms may vary also depending on a person's skin type; overly oily or dry skin can cause a number of symptoms that heighten the possibility for<unk>  to develop.
Acne mechanica
Calcinosis cutis
Crepitus
Acne cosmetica
Traumatic calcinosis cutis
Wrinkly skin syndrome
Limb–mammary syndrome
Dandruff