Postinflammatory Hyperpigmentation Medication
- Author: Robert A Schwartz, MD, MPH; Chief Editor: Dirk M Elston, MD more...
Medication Summary
Topical treatments include hydroquinone, azelaic acid, corticosteroids, tretinoin cream, GA, and trichloroacetic acid.[24] Skin whitening products are used for clinical treatment of postinflammatory hyperpigmentation.[25] They act at various levels of melanin production in the skin, some being competitive inhibitors of tyrosinase, while others inhibit the maturation of this enzyme or the transport of melanosomes from melanocytes to surrounding keratinocytes. Soy products containing serine protease inhibitors appear to have potential as a new therapeutic option for the treatment of hyperpigmentation.[26]
Wide-spectrum sunscreens are an integral part of any treatment regimen. Winhoven et al report successful therapy with oral isotretinoin in an Asian patient.[27] Combined therapy using Q-switched ruby laser and cutaneous bleaching with tretinoin and hydroquinone may be used for periorbital skin hyperpigmentation in selected patients.[28]
Depigmenting agents
Class Summary
These agents are used for gradual bleaching of hyperpigmented skin.
Hydroquinone (Ambi Skin Tone, Melanex, Nuquin HP)
A 1,4-benzenediol that suppresses melanocyte metabolic processes, especially enzymatic oxidation of tyrosine to 3,4-dihydroxyphenylamine. Exposure to sun reverses effects and causes repigmentation.
Azelaic acid (Azelex, Finevin)
May have bleaching effect on skin. Also, may have an antimicrobial effect.
Keratolytic agents
Class Summary
These agents cause cornified epithelium to swell and soften and then become macerated and desquamated.
Trichloroacetic acid topical (Tri-Chlor)
Cauterizes skin, keratin, and other tissues.
Retinoids
Class Summary
Retinoids decrease the cohesiveness of abnormal hyperproliferative keratinocytes and modulate keratinocyte differentiation.
Tretinoin topical (Avita, Renova, Retin-A)
Inhibits microcomedo formation and eliminates lesions. Makes keratinocytes in sebaceous follicles less adherent and easier to remove. Available as 0.025%, 0.05%, and 0.1% creams. Also available as 0.01% and 0.025% gels.
Corticosteroids
Class Summary
These drugs have anti-inflammatory properties and cause profound and varied metabolic effects. Corticosteroids modify the body's immune response to diverse stimuli.
Hydrocortisone topical (Cortaid, Dermacort, Westcort)
An adrenocorticosteroid derivative suitable for application to skin or external mucous membranes. Has mineralocorticoid and glucocorticoid effects, resulting in anti-inflammatory activity.
Desonide (DesOwen, Tridesilon)
Stimulates synthesis of enzymes that decrease inflammation. Suppresses mitotic activity and causes vasoconstriction.
Betamethasone topical (Alphatrex, Diprolene, Maxivate)
Decreases inflammation by suppressing migration of polymorphonuclear leukocytes and reversing increased capillary permeability.
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