The anticoagulant warfarin (COUMADIN) is a known teratogen, an agent that can disturb the development of the embryo and fetus and lead to birth defects..
Warfarin taken by a woman during pregnancy can cause bleeding into the baby’s brain (cerebral hemorrhage), underdevelopment (hypoplasia) of the baby’s nose and stippling of the ends (the epiphyses) of the baby’s long bones.
- Warshaw, Joseph
(1936-2003) Eminent American pediatrician and pioneer in human developmental biology. Warshaw used biochemical, cell biological and molecular techniques to investigate the regulation of fetal growth and perinatal adaptation. Dr. Warshaw began working in the area of developmental metabolism while at Harvard Medical School and Massachusetts General Hospital from 1967 to 1973. He moved to Yale […]
A local growth of the outer layer of the skin (the epidermis) caused by a virus. The virus of warts (a papillomavirus) is transmitted by contact. The contact can be with a wart on someone else or one on oneself (autoinoculation). Warts that occur on the hands or top of the feet are called “common […]
- Wart, genital
A wart that is confined primarily to the moist skin of the genitals. These warts are due to viruses belonging to the family of human papilloma viruses (HPVs) which are transmitted through sexual contact. The virus can also be transmitted from mother to baby during childbirth. Most people infected with HPV have no symptoms but […]
- Warts, plantar
Warts that grow on the soles of the feet. Plantar warts are different from most other warts. They tend to be flat and cause the buildup of the top layer of the skin (that has to be peeled away before the plantar wart itself can be seen. They can be quite painful. Plantar warts are […]
- Wasp sting
A sting from a wasp, which can trigger allergic reactions that vary greatly in severity. Avoidance and prompt treatment are essential. In some cases, allergy injection therapy is highly effective.