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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.
Liver cirrhosis is another cause, though through lowered metabolism of estrogen, not oversecretion or overconsumption like the aforementioned. It's necessary to know there exist two kinds of hyperestrogenism: Absolute (more concentration than usual of estrogen) and relative (a normal concentration of estrogen, higher with respect to progesterone).
Melasma is a skin condition characterized by a darkening of the skin. ... Pregnancy can cause estrogen and progesterone levels to increase, which can also lead to the occurrence of melasma in some ...
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 symptoms of melasma are dark, irregular, well-demarcated, hyperpigmented macules to patches. These patches often develop gradually over time. Melasma does not cause any other symptoms beyond the cosmetic discoloration. [4] Patches can vary in size from 0.5 cm (0.2 in) to larger than 10 cm (4 in) depending on the person.
ERα and ERβ also mediate Selective estrogen-receptor modulators' (SERMs') function, [17] but the selective ERα agitator can always cause some side effects such as breast cancer or endometrial hyperplasia, while the selective ERβ agitator may play an active effect on such diseases. So, the selective ERβ agitator has more clinical value for ...
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Skin cancer is the most common form of cancer, globally accounting for at least 40% of cancer cases. [5] [20] The most common type is nonmelanoma skin cancer, which occurs in at least 2–3 million people per year. [6] [21] This is a rough estimate; good statistics are not kept. [1]