1 PGD, preimplantation genetic diagnosis, involves removing a cell from an IVF embryo to test it for a specific genetic condition (cystic fibrosis, for example) before transferring the embryo to the uterus.  PGS, preimplantation genetic screening, is the proper term for testing for overall chromosomal normalcy in embryos. PGS is not looking for a specific disease diagnosis - it is screening the embryo for normal chromosome copy number.
Taking too much Lamictal at the start of treatment may increase your risk of a severe life- threatening skin rash. You may need frequent blood tests to help your doctor make sure you are taking the right dose.
Lamictal and Itching - from FDA reports. Summary. Itching is found among people who take Lamictal, especially for people who are female, 40-49 old , have been taking the drug for < 1 month, also take medication Klonopin, and have Bipolar disorder. This review analyzes which people have Itching with Lamictal.