Olfactory changes among patients receiving chemotherapy.
ABSTRACT Taste and smell changes (TSCs) are known side effects of chemotherapy, but smell changes (SCs) in the absence of taste changes are understudied. This study aims to explore SCs occurring without taste changes during chemotherapy, to better understand the characteristics of such changes, and how these experiences affect patients in their daily lives. Data derives from a qualitative interview study and a cross-sectional survey of 518 patients, with all patients receiving out-patient cancer chemotherapy in Sweden. Case studies of three patients with SCs and the 8% of survey participants with SCs only are in focus. All 43 participants with exclusively SCs reported increased sensitivity to one or several odors, with no participants reporting decreased sensitivity. Those reporting SCs significantly more often reported weight gain than those reporting TSCs, with oral problems and appetite loss significantly less common in the SC group. There were no differences in reported nausea between SC and TSC groups, but nausea was more common in the SC group than in those without TSCs. The case study reports were linked to and discussed in relation to possible explanatory models for increased olfactory sensitivity. SCs increase during chemotherapy, were often unpredictable and led to emotional consequences. The participants all reported heightened sensitivity to one or several odors which could not fully be explained by the potential explanatory models of anticipatory nausea and vomiting, pseudohallucinations, or increased chemical sensitivity.
- [show abstract] [hide abstract]
ABSTRACT: This study explores the prevalence of self-reported taste and smell changes (TSCs) during chemotherapy and relationships between TSCs and demographic and clinical factors. Consecutive patients who had received chemotherapy for > or =6 weeks at 11 outpatient chemotherapy units completed a questionnaire developed for this survey. Seventy-five percent of the 518 participants reported TSCs, with TSCs more prevalent among women and younger patients. After adjustment for age and sex, we found that patients reporting TSCs more often reported: previous smell changes, less responsibility for cooking, concurrent medication, higher educational levels, and being on sick leave. Participants reporting oral problems, nausea, appetite loss, and depressed mood more frequently reported TSCs. Diagnosis and type of chemotherapy regimen did not predict TSCs. TSCs were found to be common during cancer chemotherapy and were related to sociodemographic rather than clinical factors. TSCs were also found to be closely related to many other side effects of chemotherapy.Supportive Care Cancer 04/2008; 16(3):275-83. · 2.65 Impact Factor
- Annual Review of Nutrition 02/1993; 13:405-36. · 9.16 Impact Factor
- [show abstract] [hide abstract]
ABSTRACT: Adverse reactions to ambient odorous and pungent substances in daily activities among pregnant women who are half-way through pregnancy, and changes in odor perception at predominantly an early stage of pregnancy motivated the present study of odor intolerance at an early pregnancy stage. Ninety-five women averaging gestational week 11 and 102 non-pregnant women were compared with the Chemical Sensitivity Scale for Sensory Hyperreactivity (CSS-SHR). General environmental intolerance was assessed with items from the Noise Sensitivity Scale that are analogous to the CSS-SHR ("NSS-SHR"). Pregnant women were found to have higher scores on the CSS-SHR, but not on the "NSS-SHR". This suggests an odor intolerance that affects pregnant women's daily activities, which appears not to be due to a general environmental intolerance. The effect size of pregnancy on CSS-SHR score is larger in the present study of early pregnancy than in the previous study of women half-way through pregnancy.Scandanavian Journal of Psychology 09/2007; 48(4):339-43. · 1.52 Impact Factor