|Year : 2019 | Volume
| Issue : 3 | Page : 266-275
Predictors of disease severity in drug reaction with eosinophilia and systemic symptoms
Sarita Sasidharanpillai1, Anuradha Thalian Chathoth2, Anza Khader1, Olasseri K Reena Mariyath1, Najeeba Riyaz1, Manikoth Payyanadan Binitha1, Kunnummal Muhammed1, Biju George3, Parvathy Santhosh1, Sangeetha Roslind1, Nina Paul1, Mithun Harold Thomas4
1 Department of Dermatology and Venereology, Government Medical College, Kozhikode, Kerala, India
2 Health Services, Koyilandy Taluk Hospital, Kozhikode, Kerala, India, India
3 Department of Social and Preventive Medicine, Government Medical College, Kozhikode, Kerala, India
4 General Medicine, Government Medical College, Kozhikode, Kerala, India
|Date of Web Publication||19-Apr-2019|
Dr. Sarita Sasidharanpillai
“Rohini”, Girish Nagar, Nallalom PO, Kozhikode - 673 027, Kerala
Source of Support: None, Conflict of Interest: None
Background: Drug reaction with eosinophilia and systemic symptoms is an outcome of a complex interaction between specific drugs, certain herpesviruse types and the immune system of the affected individual and is characterized by an unpredictable course and recurrent flares even after withdrawal of the offending drug and administration of systemic steroids.
Aims: To identify the predictors of disease severity in drug reaction with eosinophilia and systemic symptoms.
Methods: After obtaining ethical clearance from the institutional ethics committee and a written informed consent from individual study participant, the first hundred patients who required inpatient care in Government Medical College, Kozhikode with drug reaction with eosinophilia and systemic symptoms from January 1st 2011 were included in this study aimed to identify the predictors of disease severity in drug reaction with eosinophilia and systemic symptoms.
Results: Male-to-female ratio of the study group was 0.8:1. The presence of atypical cells in peripheral smear and advanced age were found to be predictors of disease severity in drug reaction with eosinophilia and systemic symptoms, whereas, sex, facial erythema and edema and absolute eosinophil count were found not to be predictors of the same.
Limitations: The main limitation of this study was our inability to assess the role of human leukocyte antigen (HLA) association and herpes virus reactivation in disease severity in drug reaction with eosinophilia and systemic symptoms. This study was also not designed to evaluate the response to treatment given and the mortality caused by drug reaction with eosinophilia and systemic symptoms.
Conclusions: Studies on the predictors of severity in drug reaction with eosinophilia and systemic symptoms in different population groups may enable us to identify the warning signs and help to formulate the standard therapeutic guidelines.
Keywords: Disease severity, drug reaction with eosinophilia and systemic symptoms, predictors
|How to cite this article:|
Sasidharanpillai S, Chathoth AT, Khader A, Reena Mariyath OK, Riyaz N, Binitha MP, Muhammed K, George B, Santhosh P, Roslind S, Paul N, Thomas MH. Predictors of disease severity in drug reaction with eosinophilia and systemic symptoms. Indian J Dermatol Venereol Leprol 2019;85:266-75
|How to cite this URL:|
Sasidharanpillai S, Chathoth AT, Khader A, Reena Mariyath OK, Riyaz N, Binitha MP, Muhammed K, George B, Santhosh P, Roslind S, Paul N, Thomas MH. Predictors of disease severity in drug reaction with eosinophilia and systemic symptoms. Indian J Dermatol Venereol Leprol [serial online] 2019 [cited 2019 May 25];85:266-75. Available from: http://www.ijdvl.com/text.asp?2019/85/3/266/237376
| Introduction|| |
Since the initial description by Chaiken et al., drug reaction with eosinophilia and systemic symptoms (DRESS) has remained an enigma with its variable clinical features, close resemblance to infective, autoimmune and neoplastic diseases and unpredictable disease course. Lack of a reliable diagnostic criteria or a laboratory test makes it a therapeutic challenge. One unique feature of DRESS is the waxing and waning course of reaction pattern noted in some affected patients even after withdrawal of the offending drug and administration of systemic steroids.,, DRESS shows a spectrum of manifestations ranging from mild cutaneous rash to severe and life-threatening forms with major organ involvement or organ failure. No standard guidelines are available for the management of DRESS. The French Society of Dermatology has recommended a therapeutic guideline for DRESS based on internal organ involvement, organ failure and evidence of herpes virus reactivation. We believe information regarding the predictors of internal organ involvement and organ failure in DRESS may help to improve the management of the affected by early identification of those individuals at risk for severe DRESS. Allopurinol and minocycline, female sex, advanced age, facial erythema, high eosinophil count, atypical lymphocytes in peripheral smear and reactivation of human herpesvirus 6 and cytomegalovirus were considered bad prognostic factors in earlier studies.,,,,,, Previous authors have also identified certain histological features such as dense dermal inflammatory infiltrate, tissue eosinophilia and interface dermatitis with or without keratinocyte necrosis as poor prognostic factors in DRESS. Presence of apoptotic keratinocytes in histology was documented to be an indicator of DRESS-induced liver injury., In this setting, we carried out a study among 100 DRESS patients who attended the Dermatology department of our tertiary care institution during a period of 70 months from 1st January 2011 and who required inpatient care to determine the predictors of disease severity in DRESS.
| Methods|| |
An analytical cross-sectional study was conducted among 100 drug reactions with eosinophilia and systemic symptoms patients who attended the dermatology outpatient department of the Government Medical College, Kozhikode from 1st January 2011 and who required inpatient care. All cases of definite or probable DRESS diagnosed as per the RegiSCAR DRESS validation scoring system proposed by Kardaun et al. were included in the study after obtaining ethical clearance from the institutional ethics committee and a written informed consent from individual study participants (or guardians in case of children below 18 years).,
Exclusion criteria: Drug reactions not satisfying the criteria to be considered as definite or probable drug reaction with eosinophilia and systemic symptoms as per the RegiSCAR validation scoring system were excluded from the study. Patients with DRESS who were not evaluated in the dermatology department and those who did not receive inpatient care in our institution were also excluded from the study.
A preset proforma was used to collect data regarding age, sex and clinical profile of the affected patients. Facial erythema and edema and internal organ involvement, whenever present, were carefully documented in each case. Laboratory investigations including complete hemogram, absolute eosinophil count, liver function (during hospital stay, absolute eosinophil count and liver function tests were repeated once in five days), renal function tests and peripheral smear report were carefully noted.
Disease severity in DRESS was determined (drug reaction with eosinophilia and systemic symptoms severity score) based on the extent of internal organ involvement induced by drug reaction with eosinophilia and systemic symptoms – one point each was awarded for clinical manifestations identified as features of severe DRESS by French Society of Dermatology (transaminases > five times above normal, renal/cardiac involvement, pneumonia and hemophagocytosis). Two points were given for clinical manifestations identified as features of life-threatening DRESS by the French Society of Dermatology (hemophagocytosis with bone marrow failure, encephalitis, severe hepatitis, renal failure and respiratory failure). We defined severe hepatitis as hyperbilirubinemia with elevated liver transaminases.
The data was entered in Microsoft excel and analyzed with SPSS Inc IBM company version 16. The association of age, sex, facial erythema and edema, absolute eosinophil count and atypical lymphocytes in peripheral smear with disease severity in DRESS was assessed using chi-square test. A P value less than 0.05 was considered significant. Analysis of variance with post-hoc test – Bonferroni -- was done wherever possible for multiple comparison and interclass variations. PLUM (polytomous universal model) ordinal regression was used to identify the predictors of disease severity in DRESS. Odds ratio and 95% confidence intervals were assessed.
| Results|| |
During the study period of 70 months, we made a diagnosis of probable adverse drug reactions as per the World Health Organization's causality assessment in 272 inpatients. DRESS contributed to 36.8% of the total adverse drug reactions (100/272). Among the 100 patients, 42 were categorized as definite DRESS (42%) and 58 (58%) were probable DRESS as per the RegiSCAR DRESS validation scoring system. Fifty-six were females and the male-to-female ratio was 0.8:1. One female patient had human immunodeficiency virus (HIV) infection and developed DRESS to cotrimoxazole initiated for prophylaxis against Pneumocystis jirovecii pneumonia. There was a single case of connective tissue disease (rheumatoid arthritis) in the study group who developed drug reaction with eosinophilia and systemic symptoms to salazopyrin.
Age of the affected ranged from 2 to 78 years. Mean age of the affected was 38.1 years. Nineteen drugs were identified as producing DRESS [Table 1]. The most common class of drugs precipitating DRESS was aniconvulsants (in 67 patients, 67%) followed by antibiotics [on 17 occasions (17%) – penicillins 8, cephalosporins, azithromycin and cotrimoxazole 3 each]. The most common drug precipitating DRESS was phenytoin (41 patients, 41%) followed by carbamazepine (11 cases, 11%).
The latent period between the drug intake and the onset of symptoms varied from 72 hours to 120 days with an average of 25.3 days [Table 2]. In one instance of carbamazepine-induced DRESS, the patient manifested the adverse reaction 72 hours after starting the drug; the patient had taken carbamazepine for seizure disorder without any adverse events which he stopped on his own 3 months later. On restarting the drug for seizure recurrence 2 months later, he manifested features of DRESS within 72 hours. Three of the hundred patients manifested a long latent period of 120 days and the offending drugs were carbamazepine, isoniazid and divalproex sodium. Carbamazepine-induced DRESS patient had hyperbilirubinemia with elevated liver transaminases and had a severity score of two while the other two had no internal organ involvement.
|Table 2: Time interval between onset of drug intake and the appearance of symptoms in DRESS|
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Most common symptoms [Table 3] observed were rash in 98 patients (98%) [Figure 1]), fever in 97 patients (97%) and facial edema in 91 patients (91%). Facial erythema and edema were observed in 63 patients (63%). Facial edema or erythema alone was observed in 31 patients (31%). Neither erythema nor edema was documented in 6 cases (6%).
|Table 3: Clinical features and laboratory parameters in patients with DRESS|
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|Figure 1: Erythematous scaly rash of drug reaction with eosinophilia and systemic symptoms|
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Eighty-five patients (85%) manifested maculopapular rash [Figure 2]. Other rash types observed were diffuse erythema in 8 cases (8%), erythroderma in 2 cases (2%), infiltrated plaques in 4 patients (4%), purpuric lesions in 2 patients, (2%) [Figure 3], urticarial lesions in 2 patients (2%) and erythema multiforme in 1 patient (1%). Seven patients (7%) developed pustules scattered over the scalp, face, trunk and extremities. Two patients did not manifest any rash [2%, [Table 4].,
|Figure 2: Maculopapular rash in drug reaction with eosinophilia and systemic symptoms|
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|Table 4: Clinical profile and laboratory parameters of patients who manifested rashless drug reaction with eosinophilia and systemic symptomsxs|
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Mucosae were spared in nine. Forty-five of the ninety-one patients (49.5%) with mucosal involvement had nonsevere lesions limited to the scaling of lips [Table 5].
Sixty-four study participants (64%) had involvement of one or more internal organs. Most common systemic involvement noted was elevated liver transaminases in 61 patients (61%). Other organs found affected in the study population were lungs (chest radiography performed for persistent cough and chest pain detected pneumonitis and pleural effusion respectively) and kidneys [Figure 4]. Renal involvement manifested as elevated blood urea and creatinine in 5 cases and 1 dapsone-induced DRESS patient manifested reduced urine output also. None of the study participants showed tachycardia or tachypnoea.
|Figure 4: Internal organ involvement in drug reaction with eosinophilia and systemic symptoms|
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Absolute eosinophil count was above 1500 cells/mm in 48 patients (48%) and was below 750 cells/mm in fourteen (14%). Peripheral smear showed the presence of atypical lymphocytes in 42 patients (42%).
As per the DRESS severity scoring, 61 patients (61%) had score zero whereas 39 patients (39%) had scores ranging from 1 to 4. The HIV infected patient and the patient suffering from rheumatoid arthritis manifested nonsevere DRESS. [Table 6] depicts the clinical profile and laboratory data of patients with severity score of one and above and those with DRESS severity score of zero.
Age was found to have a statistically significant association with disease severity in DRESS (P = 0.04), whereas no statistically significant association was noted for sex, offending drug, facial erythema and edema and absolute eosinophil count. Presence of atypical lymphocytes in peripheral smear showed statistically significant association with severity in DRESS (P = 0.02).
To study the predictors of disease severity in DRESS and for doing away with the effects of confounding factors, analysis with PLUM ordinal regression was done. The model had a significant fit (P = 0.004) and could explain up to 23.1% of the variation in the outcome (Nagelkerke Pseudo R= 0.231).
Age was found to be a significant predictor of disease severity in DRESS. Age groups 0–20, 21–40 and 41–60 years had significantly less odds of severe DRESS compared to age group 61–80 years; [P = 0.03, odds ratio = 7.56 (1.10–51.92); P = 0.02, odds ratio = 8.17 (1.24–53.75); P = 0.02, OR = 7.21 (1.28–40.39), respectively].
Presence of atypical cells in peripheral smear was a significant predictor of disease severity in DRESS. Patients without atypical lymphocytes had 62% less odds of severe DRESS [P = 0.03; odds ratio = 0.38 (0.15–0.92)] as opposed to those with the finding. The results of regression analyses are charted in [Table 7].
|Table 7: PLUM ordinal regression - predictors of disease severity in DRESS|
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On running analysis of variance and multiple comparison with post hoc tests (Bonferroni alpha), wherever possible, significant interclass variation was found with the presence of atypical lymphocytes (F = 4.27; P = 0.04).
| Discussion|| |
Mean age of the participants in our study was similar to the findings of Cacoub et al. but lower than that described in certain other studies., The male-to-female ratio of 0.8:1 noted by us was comparable to the previous reports.
The average latent period between the onset of drug intake and appearance of symptoms documented by us were similar to figures as reported earlier., Though rare, a latent period of 120 days noted in three cases in this study was reported earlier too in other studies, especially in DRESS induced by carbamazepine, allopurinol, lamotrigine and isoniazid.,,, Matta et al. has reported a case of carbamazepine-induced DRESS that appeared 239 days after starting the offending drug and manifested severe hepatic involvement. A similar finding was recorded in the carbamazepine-induced DRESS in our study; however, the other two cases with a prolonged incubation period of 120 days manifested less severe DRESS. We did not come across any previous report of latent period of up to 120 days in divalproex sodium-induced DRESS. The rapid onset of symptoms on second exposure to the same drug noted in one of our patients has been reported previously.,, Lack of symptoms on first exposure could be attributed to the withdrawal of the drug before development of adequate sensitization for manifestation of symptoms. A shorter latent period between onset of drug intake and appearance of symptoms noted for antibiotic-induced DRESS [Table 2] could also be due to prior exposure to the same or related drugs.
Literature states that patients receiving prednisolone at a dose of 10 mg or more per day along with another immunosuppressive agent and HIV infected are more likely to manifest DRESS without rash. One of the two patients without rash in our study was receiving prednisolone 10 mg along with hydroxychloroquin (which is an immunomodulator) while he developed rashless DRESS due to salazopyrin [Table 4]. Co-administration of prednisolone and hydroxychloroquin might have played a role in nonmanifestation of rash. The second patient was a 3-year-old child, however, why she developed DRESS without rash remains unclear. Interestingly, the lone HIV positive patient in this study developed rash. She was not on highly active antiretroviral therapy and developed DRESS to cotrimoxazole offered as prophylaxis against Pneumocystis jirovecii pneumonia.
Contrary to the previous observations that underlying HIV infection and collagen vascular diseases place a patient at greater risk for severe drug reaction, both patients suffering from these diseases in the study group had a severity score of zero. However, we are unable to arrive at any definite conclusions because the number was negligible.
Our observation that elderly patients were more likely to develop serious manifestations of DRESS was as described in earlier studies. Contrary to previous data that suggested female sex to be a risk factor for severe manifestations of DRESS, sex was not found to be a predictor for severe DRESS in this study.
In contrast to previous reports, erythema multiforme type rash was not associated with internal organ involvement and severe DRESS in the present study. However, we are unable to arrive at any definite conclusion because only one out of the 100 cases (1%) in our study manifested erythema multiforme lesions.
Unlike previous reports in many studies, facial erythema and edema were not associated with disease severity in DRESS in this study.,
Elevated absolute eosinophil count was not identified as a predictor of severe DRESS in the current study. Earlier studies have reported conflicting results on the effect of eosinophilia on the severity of DRESS.,,
The discrepancies noted between our study and previous studies could be partly attributed to the difference in population characteristics of study participants as none of the previous studies are carried out in this country. Another reason could be the retrospective nature of most previous studies.,,,,,,, The few prospective studies that are available are of small sample size.
Presence of atypical lymphocytes in peripheral smear serving as a predictor of disease severity in DRESS in the present study was consistent with our earlier observations.,
The main limitations of the present study were our inability to evaluate the role of HLA association and herpes virus reactivation (due to financial constraints) which are recognized as important factors determining the severity of DRESS.,, The role of histological features as predictors of bad prognosis was not evaluated in this study. Another major drawback was that the current study was neither designed to evaluate mortality caused by DRESS nor was it designed to follow-up the patients to determine the response to treatment and delayed autoimmune complications of DRESS and their predictors.
| Conclusions|| |
DRESS is a complex drug reaction which poses a significant diagnostic challenge. The predictors of disease severity in DRESS identified in the current study were the presence of atypical lymphocytes in peripheral smear and age of the affected patients. Further studies with a large sample size in different population groups are needed to confirm or refute our findings which may help us identify the warning signs in DRESS.
We are grateful to all the faculty and postgraduates who were part of the department during the study period for their invaluable help in conducting this study.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent forms. In the form, the patients have given their consent for their images and other clinical information to be reported in the journal. The patients understand that name and initials will not be published and due efforts will be made to conceal identity, but anonymity cannot be guaranteed.
Financial support and sponsorship
Conflicts of interest
There are no conflicts of interest.
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[Figure 1], [Figure 2], [Figure 3], [Figure 4]
[Table 1], [Table 2], [Table 3], [Table 4], [Table 5], [Table 6], [Table 7]