Most of the treatments were assessed to patients with PTSD. The most efficient is an alpha-blocker, Prazosin, which reduces tone during sleep by blocking noradrenergic receptors. Prazosin would significantly decrease the number of PTSD related nightmares and would therefore improve sleep quality. However, only few studies considered the effect of Prazosin in idiopathic nightmares. Benzodiazepines are also often used to treat nightmare disorder, despite the lack of efficacy demonstrated in empirical studies. Some patients were also treated with atypical antipsychotic medications. Olanzapine has quickly decreased the nightmares. Two studies have shown the positive effects of Risperidone. Aripiprazole is more tolerated than olanzapine and has demonstrated substantial improvement in the nightmare frequency. Some other drugs as clonidine, cyproheptadine, fluvoxamine, gabapentin, nabilone, phenelzine, topiramate or trazodone have presented an amelioration of the nightmares. But some further researches are needed. Epidemiology
About 4% of American adults are affected by nightmare disorders. Women seem to be more affected than men, the ratio being 2-4 : 1. This inequality decreases with aging because of a less high prevalence in elderly women. However, it is still unclear if the difference of prevalence between men and women is real or if it reflects a higher dream recall capacity of women.According to studies, children at the age of 6–10 years are 41% more likely to experience nightmares and 22% at the age of 11. Children with persistent nightmares range from 10% to 50%. However, only 1% of children meet the criteria of a nightmare disorder.
Zarah may refer to:

Zarah (television personality), a Filipino-American, also a singer
Zarah Garde-Wilson (born 1978), Australian solicitor
Zarah Ghahramani (born 1981), Iranian-born author living in Australia
Zarah Leander (1907 – 1981), Swedish actress and singer
Zarah, or Ich weiss, es wird einmal ein Wunder geschehen, a song by Nina Hagen
Fort Zarah

See also
Zahra (name)
Zara (disambiguation)
Zaraah Abrahams, English actress