In most cases, this common type of short-limbed dwarfism is related to a genetic mutation in the fibroblast growth factor receptor 3 gene. There are two possible causes of achondroplasia. One possible cause is a genetic mutation in the fibroblast growth factor receptor 3 (FGFR3) gene located on chromosome 4.The other possible cause is that the condition can be inherited from a parent with achondroplasia.chondroplasia can also be inherited in an autosomal dominant pattern, which means that one copy of the altered gene in each cell is sufficient to cause the disorder. In these cases, one of the parents with achondroplasia passes on the FGFR3 gene to the child.
A majority of the women who contracted Zika in the first or second trimester were still pregnant at the time of the report in early April. Other research has found that pregnant women infected with the Zika virus during their first trimester face as high as a 13 percent chance that their fetus will develop microcephaly. Dr. Stella Guerra performs physical therapy on an infant born with microcephaly on June 2, in Recife, Brazil. (Mario Tama/Getty Images)
The Zika virus' incubation period is about three to 12 days after the bite of an infected mosquito. The vast majority of infections are not contagious from person to person; however, it may be passed person to person during sex. The Zika virus symptoms and signs are usually fever, rash, joint pain, and. conjunctivitis. The virus infection is usually diagnosed by the patient's history and physical exam and by blood testing (testing for the virus genome; usually done in the United States by the Centers for Disease Control and Prevention [CDC]).