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Estrogen also rises during pregnancy, and that, combined with progesterone, can contribute to the formation of melasma, which appears as dark brown spots or patches.
The exact cause of melasma is unknown. [6] Melasma is thought to be the stimulation of melanocytes (cells in the dermal layer, which transfer the pigment melanin to the keratinocytes of skin) when the skin is exposed to ultraviolet light from the sun. Small amounts of sun exposure can make melasma return to the skin after it has faded, which is ...
Select independently determines what we cover and recommend. When you buy through our links, we may earn a commission. Learn more. Melasma is a common skin condition that’s likely to occur in ...
The exact cause of melasma is unknown, says Dr. Robert Finney, MD, a board-certified dermatologist in New York City. But it’s believed to result from the skin’s pigment-producing cells being ...
The skin will appear paler than the surrounding skin surface once an injury has healed. [4] Different areas of the skin may be hypopigmented as a result of other genetic illnesses. Hypopigmentation can be caused by hereditary conditions such as vitiligo, melasma, pityriasis versicolor, pityriasis alba, albinism, and fungal infections. [4]
Melasma, also known as 'chloasma' or the “mask of pregnancy,” when it occurs in pregnant women.— It is a common skin problem that causes dark discolored patchy hyperpigmentation. It typically occurs on the face and is symmetrical, with matching marks on both sides of the face.
Examples of such side effects include breast tenderness and enlargement, nausea, bloating, edema, headache, and melasma. [15] [62] High-dose estrogen therapy with estradiol valerate injections may also cause an increased risk of thromboembolism, changes in blood lipid profile, increased insulin resistance, and increased levels of prolactin. [62]
Levels of estrogen and progesterone in normal human pregnancy are very high. [6] Estradiol levels are 1,000 to 5,000 pg/mL during the first trimester, 5,000 to 15,000 pg/mL during the second trimester, and 10,000 to 40,000 pg/mL during the third trimester, [ 38 ] with a mean of 25,000 pg/mL at term and levels as high as 75,000 pg/mL measurable ...