Stringhalt management of Australian stringhalt. Two weeks after treatment with phenytoin, significant improvement was observed in the gait abnormality of horses affected with Australian stringhalt at the trot and canter, but no significant improvement was observed at the walk or while turning. The most common plant species that have been found and identified in pastures where affected horses were located include: flatweed ("Hypochaeris radicata"), sheep's sorrel ("Rumex acetosella") and couch grass ("Elymus repens"). The type of nerve damage sustained in horses with Australian stringhalt suggests a mould toxin (mycotoxin) or a fungal 'poison' found in the soils may be a cause
Premenstrual dysphoric disorder with PMDD are more sensitive to normal levels of hormone fluctuations, predominantly estrogen and progesterone which produces biochemical events in the nervous system that cause the premenstrual symptoms. These symptoms are more predominant in women who have a predisposition to the disorder. While the etiology of the PMDs is still under investigation, it is apparent that these disorders are biologically driven and are not simply psychological or cultural phenomena. PMDD is found in women worldwide, indicating a biological basis. Most psychologists infer that this disorder is caused by both reaction to hormone influx and genetic components. There is evidence of