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South African Dental Journal

versão On-line ISSN 0375-1562
versão impressa ISSN 0011-8516

S. Afr. dent. j. vol.76 no.8 Johannesburg Set. 2021

http://dx.doi.org/10.17159/2519-0105/2021/v76no8a2 

RESEARCH

 

Detrimental orofacial manifestations of dengue and dengue hemorrhagic fever-clinical case series, review of the causes, complications, and vaccine strategies

 

 

SR DuttaI; P SinghII

IORCID - 0000-0003-3643-1200
IIORCID - 0000-0002-0675-9128

Correspondence

 

 


ABSTRACT

INTRODUCTION: It is estimated that there are about 10% of cases that involve oral mucosa in patients with dengue hemorrhagic fever (HF), and even less number of cases in dengue fever (DF) has been reported. This leads to a lack of future investigation
AIMS AND OBJECTIVES: This review intends to enhance the understanding of the epidemiology, clinical features involving the oral manifestations, and treatment of dengue disease.
DESIGN AND METHODS: Several search engines, including PubMed, World Health Organization (WHO), and Pan American Health Organization (PAHO) websites were utilized for the literature search using the terms dengue and dengue shock syndrome.
RESULTS: Dengue is a major arthropod-borne viral disease of humans. Its presentation is protean and varies from an undifferentiated viral syndrome to viral HF and severe shock. The early diagnosis of the oral manifestations, hemorrhagic, or mucocutaneous, may lead to timely clinical evaluation of the patient with signs and symptoms suggestive of dengue viral infection.
CONCLUSION: The specific therapy for dengue infections is still undiscovered. Proper care, including vector control and prevention of mosquito bites, may be beneficial. However, the role of dental professionals and general practitioners is important in identifying the oral manifestations of dengue viral infection and providing specific diagnosis and effective treatment to the patients.

Keywords: Dengue, dengue hemorrhagic fever, oral manifestations, dengue vaccines


 

 

INTRODUCTION

Dengue disease is an acute disease caused by four closely related serotypes of dengue virus from the Flaviviridae family, namely DENV-1, DENV-2, DENV-3, and DENV-4. The four variants are indistinguishable clinically. The viruses are composed of one strand of ribonucleic acid (RNA), which is within the same genus, thanks to the yellow jack and West Nile viruses. Dengue disease is the foremost prevalent mosquito-borne viral disease in humans, occurring in tropical and subtropical countries of the globe where over 2.5 billion people are in peril of infection.1 The World Health Organization (WHO) has estimated 50 million cases of dengue and the spread of another hundred thousands of cases of dengue viral hemorrhagic fevers (VHF) occuring annually, that stimulate the epidemic activity.2 It is estimated that about 1.8 billion people die from dengue in the WHO member states of Western Pacific and South-East Asia.3 Therefore, the early diagnosis of the dengue virus infection in the febrile stage is critical for appropriate management. The availability of scientific literature that reports on the oral manifestations of dengue fever (DF) are scanty as the signs and symptoms of the affected patients usually get unnoticed or misinterpreted with other conditions, most likely leukemia, hemophilia, thrombocytopenia by the dental professionals. WHO included gingival bleeding, a common oral manifestation of DF as the nonspecific finding of the disease.4 This review focuses on the identification of the predictive markers of oral and clinical findings within the acute stage of dengue infection. Dengue VHF (DHF) was first documented in 1953 in Manila, the Philip-pines.5 In humans, the manifestations of dengue infection vary from relatively mild, nonspecific viral syndrome mentioned as DF to severe hemorrhagic disease and death. The severe hemorrhagic like disease known as DHF and dengue shock syndrome (DSS), is the usual explanation for hospitalization and death among children in Asia.6

Epidemiology

About 500,000 to 1,000,000 individuals' worldwide contract DF/ DHF annually, making it the foremost common arthropod-borne disease on earth.7 WHO also has an internet-based system for global surveillance of DF/ DHF known as DengueNet to monitor and guide dengue/DHF prevention and control programs.

Pathophysiology and Oral Manifestations

The life-span of DF within the mosquito is 8-12 days followed by a further 3-14 days within the human host. This is often followed by clinical disease lasting 3-7 days. The virus is passed from mature female mosquitoes to their offspring, and an infected mosquito is infectious throughout its lifespan. The amount of clinical dengue infection ranges from asymptomatic infection to critically ill patients with hemorrhage and shock. Case definitions are described in TABLE I.

Individuals with DSS develop antibodies and lifelong immunity to the variant that they contracted and a transient immunity to all or any four of the variants. Only after a second, third, or fourth infection (i.e., with a special variant) is contracted, is it likely to develop a clinical case of hemorrhagic disease. Transplacental transfer of maternal antibodies can put an infant in peril for DHF.8

The oral cavity is considered the gateway and the site of manifestation of a wide range of systemic diseases. Therefore, the identification of oral manifestations of dengue becomes of utmost necessity to establish the early diagnosis of this pathology. Oral manifestations are commonly associated with DHF, and infrequently in cases of classic DF. These include vesicles on the lips and palate, lip crustings, and blisters in different areas of the mouth, gingival bleeding, erythema, oral candidiasis, osteonecrosis of the dentoalveolar structure, lingual hematoma, osteonecro-sis of the jaw, and difficulty in swallowing.9,10 In such a scenario the role of dental professionals, especially general practitioners, becomes most important to identify these problems and guide the patient for effective medical care and treatment.

The general pathologic findings11 include:

Depression of megakaryocytes and other hemopoietic cells within the bone marrow.

Active proliferation of lymph nodes and spleen, and lymphocytolysis in germinal centers.

Focal mid-zonal necrosis and fatty changes within the liver.

Occasional glomerulonephritis (due to immune complex deposition).

Case Presentations

A few clinical case reports obtained from patients visiting the out-patient department (OPD) clinic in our Institution are presented below to address, in a specific way, oral manifestations associated with or related to DF. These reports are presented after written consents were obtained from the patients.

 

CASE REPORT 1

A moderately aged male patient (~55-65 years, not accurately determined by the patient) visited the hospital for an ulcer in his mouth, pain-free gum bleeding, and trouble in gulping. He additionally gave a history of fever for several weeks and body temperature ranging between 110°F and 120°F. Ulcers at first had begun in the right mandibular posterior buccal mucosa and afterward included the junction of hard and soft palate [Figure 1A], tongue [Figure 1B]. He also had several tiny red spots on his face [Figure 1C] for more than one month. History uncovered that he had joint pain from the past few days with a history of fever. On clinical assessment, petechiae were observed in the upper face and neck. He had an axillary temperature of about 125°F. Respective submandibular lymphadenopathy was obvious. The intraoral assessment revealed raised hemorrhagic plaques on the right posterior buccal mucosa just as on the dorsum of the tongue and floor of the mouth [Figure 1D]. The hemorrhagic plaques were encircled by the erosive mucosa, and the outside of the hemorrhagic plaques was sporadic. At the intersection of the hard and soft palate, a diffuse erosion of 4 χ 4 cm was available. The tonsils on both right and left sides were extended, erythematous and aggravated. The patient had xerostomia and the tongue had all being coated with plaques. A tourniquet test was performed and around 1015 petechiae/2.5 cm2 were observed. The patient was then exposed to a progression of hematological and biochemical examinations. Platelet count was 45000 cells/mm3, absolute leukocyte counts 3500 cells/mm3, serum albumin 2.8 g/dl, hemoglobin 9 gm/dl, and ESR 49mm/hr., INR> 1.5, Bleeding time 8 minutes were noted.

With the above outcomes, a temporary determination of DHF was made. To confirm further, immunoglobulin M (IgM) was identified by an immunizer catch protein connected enzyme-linked immunosorbent assay (ELISA; 7 days after the beginning of indications).

 

CASE REPORT 2

A 49 year old female patient visited the clinic for a painless therapy of blister in her mouth, bleeding from the gums and alveolar mucosa on the left posterior back of the jaw [Figure 2A] for the past one month and she had trouble swallowing for as far back as 15 days. She was accounted for a history of high-grade fever for over a few weeks, stomach pain, and occasional nose and gum bleeding. Rankles at first were present on the left half of maxillary alveolar mucosa followed by its appearance on the upper right mucosa. Bluish-red vessels were observed prominently for 4-5 days in the lower appendages on gripping. There were continuous joint aches from the hour of the beginning of the fever. On clinical assessment, petechiae were observed everywhere on the body including the upper and lower appendages except the palms and soles, lower face, [Figures 2B] and neck. The axillary temperature of 103°F was noted. On palpation, respective submandibular lymphadenopathy was apparent. The intraoral assessment revealed the appearance of common ulcerative and hemorrhagic sores on both sides of the lower jaw, starting from cuspid to molar region. Petechiae were additionally present on the extraoral lower face and intraoral right lower posterior premolar and molar regions. At the intersection of the hard and soft palate and mostly on the hard palate, on both sides, little blood-filled vessels were prominent [Figure 2C]. On the right posterior buccal mucosa strip band of dark blue hemorrhagic band observed [Figure 2D]. A tourniquet test was performed and around 15-30 petechiae/2.5 cm2 were observed. The patient was then exposed to significant hematological and biochemical examinations to build up the analysis. Thrombocytopenia (45000 cells/mm3), absolute leukocyte counts (3300 cells/mm3), lymphocyte check (9%), serum albumin (2.9 gm/dl), hemoglobin (10 gm/dl), and ESR (45mm/hr), INR (> 1.5), Bleeding time (9.15 minutes) were recorded. The testing of dengue virus IgM by a capture ELISA (MAC-ELISA) is very sensitive and can be performed at least five days after the beginning of fever for confirmatory diagnosis.

 

CASE REPORT 3

A 25-year-old male patient was reported with painless blood clots on the lower front region (cuspid to cuspid) of the jaws [Figure 3A] and non-healing ulcers on the lower lip [Figure 3B] and right posterior lower back region on the jaw [Figure 3C]. The patient was determined to have DF and presented signs and manifestations related to high fever, muscle pain, and rash. Serologic tests uncovered the immunoglobulins (IgM) and (IgG) for dengue antigens. Under clinical diagnosis, the patient was taking acetaminophen (500 mg) four times each day and oral hydration. White cell count was 2500 cells/mm3 (out of these of these 1155/mm3 were neutrophils. Petachiae, bleeding gums, ulcer, dryness of the mouth were the intraoral manifestations. His platelet count was 59,000/mm3, pro-thrombin time > 30 seconds. The intraoral assessment uncovered a few white plaques with ulcerative spot situated on the lower lip mucosa. The patient had a history of headache, orbital pain, hematemesis, and hematochezia. Detecting viral genomic sequences with real-time reverse transcription-polymerase chain reaction (rRT-PCR) or dengue nonstructural protein 1 (NS1) antigen by immunoassay can confirm the presence of dengue in patients with a viable clinical history.

Clinical spectrum

The presentation of the oral manifestations in the above case reports suggests that a thorough evaluation of the oral findings in cases of dengue infection is extremely important, though such reports in the literature are rare. Therefore, it is up to the dentists and otorhinolaryngologists to be informed about the various oral manifestations of the disease so that proper diagnosis and treatment can be provided to the patients.

The spectrum of clinical manifestations12,13 is shown in Figure 4. Many of the infections that occur in children are asymptomatic, while they are mostly symptomatic in adults. The clinical features12,14 and the laboratory investigation11,15 for the diagnosis of DHF are enlisted in TABLE II.

Management

The following steps are necessary for the management of the disease:

1. Hospitalization could be necessary when significant dehydration (>10% of normal body weight) has occurred.

Other signs of great dehydration are highlighted.

2. One should avoid NSAIDs/aspirin.

3. Unless it is indicated, blood transfusion/IV fluids should be avoided.

4. Steroids and antibiotics should be avoided.

5. Rapid changes within the speed of fluid infusion should be avoided.

6. The insertion of a nasogastric tube to figure out concealed bleeding or lavage to stop bleeding are not recommended.

7. If present, acidosis should be corrected.

As hemorrhage is the hallmark of dengue, it is warranted that dentists are aware of the complications of performing dental procedures in patients suffering from DF/DHF. It becomes equally important to know the correct medical history and suggest appropriate treatment. Besides, the nature of the disease should be considered, and care should be taken to prescribe medicines. These patients should avoid the use of non-essential drugs, especially anti-inflammato-ries, antibiotics, and other drugs that show renal, hepatic, or hematological toxicity.

The signs of recovery, criteria for discharging patients, factors affecting the prognosis of dengue, and the measures for prevention and control of DHF14 outbreak are described in TABLE III.

Current progress in dengue vaccines

The development or trial of several vaccines is underway. This includes live attenuated, live chimeric, and inactivated virus vaccines, as well as live recombinant, DNA, and subunit vaccines.16 However, there is no licensed dengue vaccine yet. The live attenuated virus vaccines and live chimeric virus vaccines are being evaluated clinically. The opposite vaccine candidates are evaluated in preclinical animal models or are being prepared for clinical trials. For dengue vaccines to be safe and efficient, it is important to consider the immunopathogenic complications like antibody-mediated enhancement and autoimmunity.

Disease Prevention Programs: For epidemic prediction, health authorities have to be prepared to accurately monitor dengue virus transmission in a community and provide information at any time point on the site of transmission (Figure 5), virus serotypes causing the infection, and the clinical manifestations that are claimed to be due to dengue infec-tion.17,18 Any release of information should be in consultation with infectious-disease physicians. All patients with any hemorrhagic manifestation; on admission diagnosis of viral encephalitis, aseptic meningitis, or meningococcal shock; and/or a fatal outcome following a viral prodrome should be considered.19 This proactive television is meant to watch disease activity during the inter-epidemic period before epidemic transmission. Individually, the three components are not sensitive enough to supply effective early warning, but when used collectively, they are visiting often accurately predict epidemic activity.17

Mosquito control - Controlling the mosquito vector, Aedes aegypti, in and around the home, where most transmission occurs is important for the prevention and control of dengue and DHF. Space sprays with insecticides to kill adult mosquitoes are not usually effective18-20 unless they are used indoors. The water-holding containers that function as the larval habitats for Aedes aegypti within the domestic environment should be eliminated or cleaned.18, 20,21 There are two approaches to effectively contro/ Aedes aegypti involving larval source reduction. Within the past, the foremost effective programs have had a vertical, paramilitary organizational structure with an outsized staff and budget.21 In recent years, the focus has been placed on community-based approaches for larval source reduction to supply program sustainability.18 The effectiveness of this approach remains unknown. Mosquito control for dengue prevention has recently been reviewed.20

Conclusion

Dengue is a typical self-limiting disease. However, the lack of proper monitoring and adequate volume replacement may cause a fatal outcome. There is an insight into emerging outbreaks of dengue in various states of India. The oral manifestations regarding DF/ DHF are not commonly reported, hence dental professionals should be made aware of the broad range of alterations during dengue viral infections. This review with case presentation highlights the importance of oral lesions due to DF to clinicians of all fields, especially in dengue epidemic or endemic areas. Therefore, it becomes imperative for dental and medical care physicians to acquire updated knowledge about early diagnosis and management guidelines. Moreover, future research with appropriate methodologies focusing on the oral manifestations of DF/ DHF is required to provide a detailed description of the oral changes in the context of dengue infection.

Disclosure

Nothing to disclose.

 

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Correspondence:
Dr Purnima Singh:
purnimasingh99@gmail.com

 

 

Author contributions:
1 . Dr. Shubha Ranjan Dutta: Collection of data (case reports), analysis of the data, drafting of the manuscript
2 . Dr. Purnima Sing: Analysis of the data, its organization, drafting the manuscript, and revising the manuscript

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