Doctors categorize Chiari malformation into three types, depending on the anatomy of the brain tissue that is displaced into the spinal canal, and whether developmental abnormalities of the brain or spine are present. Chiari malformation type I develops as the skull and brain are growing.
Evening primrose oil is LIKELY SAFE for most people when used for up to a year. It can sometimes cause mild side effects including upset stomach, nausea, diarrhea, and headache. Pregnancy and breast-feeding: Taking evening primrose oil is POSSIBLY UNSAFE during pregnancy.
The benefit of taking evening primrose oil is increasing the levels of GLA in your body, which could be low if you're not eating enough of the right fats, drink too much alcohol, have low thyroid function, or are undergoing radiation treatment [source: Brown].