IRCT20120215009014N298 IRCT 2019-09-22 Hamedan University of Medical Sciences Effect of Bitter orange and chamomile inhalation aromatherapy versus placebo on the sleep quality of admitted patients Effect of Bitter orange and chamomile inhalation aromatherapy versus placebo on the sleep quality of admitted patients: a single-blind randomized clinical trial 2019-10-07 anticipated 132 Complete https://irct.ir/trial/42229 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: The patients will be randomly assigned to intervention and control groups using block randomization. For this purpose, we will prepare six sheets of paper, writing on two sheets the name of the intervention 1 and on two other sheets the name of the intervention 2 and on the third two sheets the name of the control. The paper sheets will be pooled, placed in a container, and randomly drawn one at a time for each patient without replacement until all six sheets are drawn. The six paper sheets will be then placed back into the container, and this action repeated until the sample size is reached, Blinding description: The physician who will examine the patients will not be aware of the intervention. Thus, the trial will be run as single-blind. N/A Sleep disorder. Intervention 1: Intervention group 1: Inhalation aromatherapy with Bitter orange 2.5% every night 2 hours before sleep for 3 nights. Intervention 2: Intervention group 2: Inhalation aromatherapy with chamomile 2.5% every night 2 hours before sleep for 3 nights. Intervention 3: Control group: Inhalation aromatherapy with distilled water every night 2 hours before sleep for 3 nights. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is It depends on the situations and the results of the study as well as approval of the financial supporting organization.