As folate is vital in the first trimester of pregnancy for healthy fetal development, the use of antifolates is strongly contraindicated in pregnancy and carries significant teratogenic risk. Low doses of methotrexate can deplete folate stores and cause side-effects that are similar to folate deficiency.
Cause of Adult Mumps. Adult mumps is caused by an infection with the mumps virus, which is found worldwide. The mumps virus is an RNA (ribonucleic acid) virus from the family Paramyxovirus of the genus Rubulavirus. The mumps virus only infects humans.
Hives in adults can also be brought on by poor skin care. This can come in the form of dry or chapped skin, extreme sunlight, body tanning, extreme cold condition plus several others. The care of your body and the health of your skin play an enormous roll in what causes hives in adults.hat Causes Hives in Adults-The Immune System: What we do know is that hives in adults has a great deal to do with the immune system.