Treatment: Considerations and how to approach
There is no single best mode
for treatment of all lesions . Different treatments for different
forms of acne is determined by many factors, including the type
of lesions present, duration of disease, past and present response
to treatment, tendency for scarring and development of acne
spots. Knowing the symptoms and treating acne early and adequately
are the keys to a successful acne management. Current medical condition
and medications especially oral contraceptives, corticosteroids
and topical antibiotics may affect its treatment . Psychological
factors may have great impact on removal of lesions. Also adult
patient's overall hygiene, facial care, hair grooming and use of
cosmetics must be considered. There are two important points that
acne patients should be aware of. First, six to eight weeks of treatment may be required before improvement is noted. Second, body lesions
including back, chest, shoulder lesions respond more slowly to a
topical applications than do those on the face.
A rational approach to treat
acne could be to selectively target the treatment to factors involved
in development of acne and its pathogenesis. These approaches provide
a guideline prevention for and medical intervention for acne. First, prevention
of comedones (whiteheads and blackheads). Second, sebum production
reduction. Third, preventing rupture of comedones. Fourth, resolution
of inflammation concurrent with treating acne. Fifth, preventing
and correcting acne scars. Treating these sequeles of acne could
become even more cumbersome.
When
should I see a doctor?
It is important to note that severe
acne must be consulted with a physician. Best treatments for mild
forms of acne such as comedones (whiteheads and blackheads), small
pustules and scattered papules are treatment products with desquamating
agents such as benzoyl peroxide. Among leading over-the-counter drugs
it could be counted. Its antibacterial efficacy is noteworthy
in rapid destruction of Propionibacterium acnes. This suppressive
effect is much faster compare with that of antibiotics. In contrast
to antibiotics, resident organisms do not become resistant to this
agent. This anti acne agent also demonstrates anti-inflammatory
effect due to a reduction of oxygen free radicals. Its comedolytic
effect is comparatively slight in contrast to other topical agents
used for treatment of acne. Contact allergy is quite rare with it.
Treatment would be based on severity of acne lesions. Mild, moderate and severe acne are to be treated with different treatment protocols. Mild form (grade I) is treated with topical retinoid plus benzyold peroxide. For moderate acne (grade II-III) oral antibiotics and hormone therapy for females may be added. Treatment of severe acne is either isotretinoid or combination of what is indicated for mild to moderate forms. Here you can find more information on acne maintenance treatment and its algorithm based on acne grade. Evidently, isotretinoin and antibiotic therapy is not included in acne maintenance treatment, which targets comedogenesis, for their potential side effects and toxicity. Maintenance treatment is necessary to prevent development of microcomedones.
Topical
Acne Treatments:
Among comedolytic
agents salicylic acid, which could be used as alternative or adjunct to
benzoyl peroxide, is considerably being used. This combination treatment
may be used among modalities for moderate acne forms. Salicylic acid comedolytic
activity justifies its therapeutic value in acne. Keratolytic activity
of this BHA causes peeling and removal of top layer of the skin.
This can result in preventing the follicles from getting plugged.
Salicylic acid is also moderately effective in destructing Porpionibacterium
acnes and shows moderate antibacterial efficacy. pH control is another means to treat acne as propionobacterium acne alters skin's pH and its modification may have a role in treatment. Application of
alpha hydroxy acids may resolve the comedones and prevent more severe
acne. Use of AHA's alone is not indicated for acne. However, a positive
effect through control of sebum production and ductal hypercornification
is likely.
Topical acne treatments containing azelaic acid is indicated in mild forms like acne
comedonica. No sebum production reduction is seen using this agent.
At high concentration, this acid is bactericidal. However, the degree
of bacterial suppression is considerably less than that with benzoyl
peroxide. Azelaic preparations have also an anti-inflammatory effect
to some degree by decreasing production of reactive oxygen species.
It also normalizes keratinization, which accounts for its anticomedogenic
effect. Mild sides effects such as redness and scaling is associated
with use of the drug.
One of
the oldest drugs in history of acne is sulfur. For a long time
sulfur was the most common ingredient in acne clearing treatment products.
Sulfur while banishes inflammatory acne, simultaneously it incites
formation of the comedones from which new acne starts.
Tretinoin is another topical modality that could be used to treat acne vulgaris. This derivative of Vit A is keratolytic and may cause a form of dermatitis called retinoid dermatitis. It could be combined with antibiotic to address other etiologies involved in formation of acne lesions. One of these combinations is tretinoin-clindamycin that one study indicates its increased efficacy.
New retinoids(adapalene) have shown to have anti-inflmmatory effects which aims to another mechanism in develpoment of acne, inflammation (increase in IL-1 and TNF). This reserves use of retinoids in inflammatory as well as non inflammatory acne treatment.
Antioxidants are another category among treatments for acne.
Superoxide and other free radicals production appear to be involved in aggravation of acne vulgaris. Propionobacterium acne may be accounted for superoxide's radicals generation. This may explain role of alpha lipoic acid and bioflavanoids in treatment of acne vulgaris.
Oral Treatments:
Isotretinoin is among oral treatments used in severe cases of acne. Retin-A
tretinoin (topical form of isotretinoin) is among acne modalities
to get rid of breakouts especially when other forms of treatment
has failed. Tretinoin is a prescribed drug and an skin irritant
particularly in liquid form. Cold climates and exposure to sunlight
may cause marked irritation. Retin-A (tretinoin) has an antikeratinization
effect and prevents formation of the comedones. Retin-A differs
from benzoyl peroxide and topical antibiotics in having no or a
controversial effect on Porpionibacterium.acnes and causing no reduction
in surface free fatty acids. Tretinoin effectiveness against microcomedones
(a blackhead) compare with other removal modalities provides a rationale
for its use in most forms of acne. This agent is particularly helpful
in reducing non-inflammed lesions and comedones thereby indirectly
reduces the number of inflammed blemishes by correcting the follicular
hyperkeratosis. This drug is a powerful exfoliant and can cause
tenderness, redness and scaling.
Antibiotics may be used in moderate to severe cases of acne. Tetracyclin, Erythromycin and Clindamycin are more commonly used. Their potential side effects and development of resistance discourage their use for long term and renders them not a proper choice in acne maintenance treatment.
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