X-linked dominant disorders are caused by mutations in genes on the X chromosome, one of the two sex chromosomes in each cell. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell is sufficient to cause the disorder.
Common Questions and Answers about Estrogen patch types. vivelle-dot. I did not want to go through menopause or life with no estrogen at age 35, so I opted for the estrogen hormone therapy. I chose to go with the Estradiol patches.
The two main types of over-the-counter estrogen products include creams and pills. Creams are either applied to the skin or inserted into the vagina, where the hormones will diffuse into the bloodstream. Pills are ingested and the hormones are absorbed into the bloodstream through the digestive system.