There are several theories:
1- paired pores (ie the accumulation of dead skin cells) which leads to blockage.
2- Increasing the sebaceous secretions as well as the change to free fatty acids by means of bacteria is a resident of the sebaceous glands, called «Brobbeona Bactram be afraid» Knowing that sebaceous glands directly connected with the hair follicles to be unity pilosebaceous which are spread on the face, chest, shoulders and back which sites that appear acne in the habit.
3- entrapment secretion of the sebaceous glands.
3- entrapment secretion of the sebaceous glands.
4- leakage of secretions into the dermis(lower layer of the skin), leading to inflammation
Also there are other reasons believe that they have a role, even indirectly, including:
- Hereditary reasons.
- Increasing vulnerability androgen due to the existence of excessive sensitivity to these hormones in sebaceous glands, though the normal level of these hormones in the blood with the knowledge that the presence of acne in women with facial hair, menstrual disorder may be due to hormonal imbalance.
