Re: Do you have Melasma from Mirena?

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Melasma
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Melasma
Classification and external resources
Image:Melasma-chloasma.jpg
Melasma on adult female's cheek.
ICD-10 L81.1
ICD-9 709.09
DiseasesDB 2402
MedlinePlus 000836
eMedicine derm/260
MeSH D008548
Melasma (also known as chloasma or the mask of pregnancy when present in pregnant women) is a tan or dark facial skin discoloration. Although it can affect anyone, melasma is particularly common in women, especially pregnant women and those who are taking oral or patch contraceptives or hormone replacement therapy (HRT) medications. It is also prevalent in men and women of Native American descent (on the forearms) and in men and women of German/Russian Jewish descent (on the face).

Contents [hide]
1 Symptoms
2 Cause
3 Diagnosis
4 Treatment
5 See also
6 External links



[edit] Symptoms
The symptoms of melasma are dark, irregular patches commonly found on the upper cheek, nose, lips, upper lip, and forehead. These patches often develop gradually over time. Melasma does not cause any other symptoms beyond the cosmetic discoloration.


[edit] Cause
Melasma is thought to be the stimulation of melanocytes or pigment-producing cells by the female sex hormones estrogen and progesterone to produce more melanin pigments when the skin is exposed to sun. Women with a light brown skin type who are living in regions with intense sun exposure are particularly susceptible to developing this condition.

Genetic predisposition is also a major factor in determining whether someone will develop melasma.

The incidence of melasma also increases in patients with thyroid disease. It is thought that the overproduction of melanocyte-stimulating hormone (MSH) brought on by stress can cause outbreaks of this condition. Other rare causes of melasma include allergic reaction to medications and cosmetics.

Melasma Suprarenale (Latin - of the adrenals) is a symptom of Addison's disease, particularly when caused by pressure or minor injury to the skin, as discovered
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