There are many types of acne. Some variants of acne are acne inversa,drug acne,chemical acne or oil acne,chloracne,tropical acne, and infantile acne and excoriated acne.
The features of acne inversa are that patients are affected for years and sometimes even decades and this acne had withstands medication without any improvement. There is the discharge of foul smelling pus from the inflamed lesions which is very disconcerting. There are also other variants of this disease which make diagnosis difficult. The outcome of this type of acne is devastating, leading to depression and other psychological problems. Genetic predisposition may be one of the factors for this disorder. Acne inversa is more prevalent than previously thought and is often misdiagnosed. It is characterized by appearance of lesions in scalp,neck,mammary folds,genitals,buttocks and anal region.
Drugs containing steroids too can cause acne. Anti-epileptic and anti-tuberculous drugs are known to cause acne eruptions or aggravate existing acne. This is known as Drug acne.It occurs when drugs containing androgen stimulating agents are given to patients. This happens because androgen triggers excess sebum production which leads to acne formation.
Chemical acne or oil acne can happen to industrial workers coming into contact with lubricating and cutting oils and other chemicals containing hydrocarbons. These acne like eruptions occur at the site of contact. Even cosmetics that contain certain mineral oils such as cocoa butter can cause acne at the site of application. The application of ointments for skin diseases containing tar can cause acne at the site of application.
Chloracne occurs to those who come into contact with substances containing dioxin and chlorinated hydrocarbons. This type of acne is very disfiguring and is characterized by appearance of whiteheads and inflamed cysts which may persist for a prolonged period and can be caused by a mere transient contact with the substance. Epidemics of this type of acne has occurred after factory accidents, caused by widespread spill of these substances and people coming into contact with this substance. Even moths after the accident,the acne persists causing blemishes.
Tropical acne appears mostly in trunk and does not respond to medication.It affects Caucasians in hot humid climates such as those obtaining in far east. The only solution is avoiding the climate by moving to a more moderate climate which is suitable.
Infantile acne occurs to infants under twelve months. Infants affected with this type of acne are more prone to severe acne during or after puberty.
Those who pick or squeeze their acne spots get excoriated acne. The resulting lesions and papules are more inflamed than the normal acne spots. The manual interference in fact aggravates the problems hence it is advisable not to pick or squeeze acne spots.
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