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    Oral Lichenoid Drug Eruption: A Report of aPediatric Case and Review of the Literature

    Victoria Woo, D.D.S.,* Julia Bonks, D.M.D., Lyubov Borukhova, D.M.D.,

    and David Zegarelli, D.D.S.

    *School of Dental Medicine, University of Nevada, Las Vegas, Nevada, Columbia University College of Dental

    Medicine, New York, New York

    Abstract:Lichenoid drug eruptions are seen most frequently on the

    skin and seldomly affect the mucosal surfaces. Oral involvementknown as

    oral lichenoid drug eruptionis more common in the adult population and

    has been associated with numerous medications. Pediatric-onset oral lich-

    enoid drug eruption is an exceptionally rare finding with only isolated cases

    published in the literature. The nonspecific appearance and latent presen-

    tation of pediatric oral lichenoid drug eruption can cause confusion in

    diagnosis and treatment. We report a case of oral lichenoid drug eruption

    occurring in a 15-year-old and explore challenges in the clinical and histo-

    logic recognition of this condition.

    Drug eruptions represent a spectrum of cutaneous

    and mucosal changes related to oral, parenteral, orinhaled exposure to medications (1,2). The clinical pre-

    sentation of drug eruptions is variable and may mimic

    the immune-mediated mucosal diseases including lichen

    planus, pemphigus vulgaris, mucous membrane pem-

    phigoid, and lupus erythematosus (LE) (3). A well-

    recognized form of chronic drug reaction is the lichenoid

    drug eruption (LDE), which may manifest on the skin,

    oral mucosa, or both sites (4); of the two, oral LDE

    (OLDE) is less common than cutaneous LDE (57) and

    may occur independently of skin lesions (4). The intra-

    oral sites of predilection of OLDE include the posterior

    buccal mucosa, tongue, floor of mouth, palate, and

    alveolar ridges (810). There appears to be a preferencefor unilateral distribution (1113). Clinically, lesions of

    OLDE are morphologically identical to those of idio-

    pathic oral lichen planus (OLP). They can exhibit a

    classic reticular pattern or a predominantly erosive pat-

    tern, depending on the drug implicated (14). Further-more, thehistologic appearance andimmunologic profile

    of drug-induced lichenoid lesions are nearly identical to

    their idiopathic counterpart (6,1517).

    Oral lichenoid drug eruptions have been reported in

    association with an extensive list of medications. The

    most commonly implicated drug classes include: peni-

    cillamine (5,18), antimalarials (19), gold salts (5,12),

    antihypertensives, including b-blockers (4,5,18,20,21)

    and angiotensin inhibitors (5,6,2123), nonsteroidal

    antiinflammatory drugs (5,24,25), and HIV medications

    (5,26,27). The time from initial medication intake to

    lesion appearance is variable, ranging from weeks to

    months with an average delay in onsetof 23 months (6).Demographically, OLDEs tend to be seen in adult

    patients and are rare findings in the pediatric population

    (7), which the authors consider to be patients 15 years of

    Address correspondence to Victoria Woo, D.D.S., ColumbiaUniversityDivision of Oral Pathology, 630 W. 168th Street,PH15W-1562 New York, NY 10032, or e-mail: [email protected].

    DOI: 10.1111/j.1525-1470.2009.00953.x

    458 2009 The Authors. Journal compilation 2009 Wiley Periodicals, Inc.

    Pediatric Dermatology Vol. 26 No. 4 458464, 2009

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    age or younger. The disparity in prevalence is likely due

    to the more frequent use of medications and to the

    multiplicity of medications used in older individuals in

    our older population. Moreover, the majority of medi-

    cations associated with OLDE are used for the treatment

    of predominantly adult-onset conditions (7).

    In this article, we present a pediatric patient with

    OLDE who demonstrated dramatic improvement on

    discontinuation of his systemic medications.

    CASE REPORT

    A 15-year-old male was referred for evaluation of bilat-

    eral buccal mucosal and tongue lesions of more than

    1-yearduration.Thepatientreportedthathislesionswere

    painful, particularly when exposed to certain foods and

    liquids. A past medical history revealed that he was under

    treatment by a psychiatrist for insomnia and mood

    swings. His medications included risperidone (Risper-dal) and carbamazepine (Tegretol), which he had been

    taking for2 years. Further questioningrevealed no other

    medical conditions, no family history of lichen planus

    (LP), no history of hepatitis B vaccination, and no sig-

    nificant exposure to cinnamon-containing products or

    foodstuffs. On intraoral examination, erosivelesionswith

    white striatedperipheral borderswereobserved involving

    the right and left buccal mucosa (Fig. 1A) and lateral

    tongue borders (Fig. 1B). The ulcers corresponded to the

    occlusal planes, suggestive of a Koebner phenomenon. A

    predominantly reticular lesion was also evident upon the

    lower labial mucosa. There were no adjacent dental res-torations and no cutaneous involvement was noted. The

    clinical differentialdiagnosis includedOLP versus an oral

    mucosal lichenoid reaction. A biopsy was performed of

    the left buccal mucosa and revealed hyperparakeratosis

    with an underlying lichenoid infiltrate containing scat-

    tered neutrophils. Interface mucositis, characterized by

    intraepitheliallymphocytic exocytosisandcolloidbodies,

    was also evident (Fig. 2). A histopathologic diagnosis of

    hyperkeratosis and lichenoid mucositis was made. The

    patient was provided with a topical steroid mouthrinse

    (dexamethasone suspension 0.5 mg5mL). On follow-up

    2 weeks later the lesions were unchanged. An OLDE re-

    lated to the patients medications was stronglysuspected.Upon consultation with the patients psychiatrist, both

    medications were stopped. On follow-up 1 month later,

    the patient reported 100% subjective improvement in his

    symptoms. Clinically, there was almost complete resolu-

    tion of the ulcerations although residual white striations

    were noted involving the right and left posterior buccal

    mucosa (Fig. 3A). The bilateral tongue borders were

    clinically normal (Fig. 3B). A drug re-challenge was

    offered but refused by his parents due to discomfort

    A

    B

    Figure 1. (A) Oral lichenoid eruption: Erosions associated

    with white striations of left buccal mucosa. (B) Oral lichenoideruption: Large erosion with white, striated periphery of leftlateral tongue border.

    Figure 2. Photomicrograph of oral biopsy demonstrating alichenoid infiltrate with intraepithelial lymphocytes and colloidbodies (hematoxylin and eosin, magnification 100).

    Woo et al: Oral Lichenoid Drug Eruption 459

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    associated with his initial lesions. At 1-year follow-up,

    there were persistent reticular lesions of the bilateral

    buccal mucosa butno evidence of ulceration. The patient

    has been placed on annual oral pathology recall and

    continues to be followed closely by his psychiatrist.

    DISCUSSION

    Pediatric LDE is infrequent due to the relative uncom-

    mon use of systemic medications in this age group. A

    review of the current literature revealed several cases of

    cutaneous LDE in children (28,29). However, reports of

    OLDE are extremely rare and may be related to lack ofrecognition or misdiagnosis as other clinical entities,

    including idiopathic LP. We performed a Medline and

    PubMed search for pediatric OLDE cases published in

    the English-language literature andfound onlytwo cases,

    presented in Table 1 (29,30). The patients listed in this

    table fulfilled the criteria for OLDE, including a history

    of systemic medication intake, clinical and histologic

    evidence of lichenoid mucositis, and resolution of lesions

    with drug cessation. It is noteworthy that formal analysis

    of documented cases was often difficult due to a wide

    variation in reporting techniques and diagnostic criteria.

    A complete listing of OLDE-causing medicationsused in the pediatric population is beyond the scope of

    this paper. However, an abbreviated list is provided in

    A

    B

    Figure 3. (A) Appearance of oral mucosa 1 month following

    drug withdrawal: Residual white striations of left buccalmucosa. (B) Appearance of oral mucosa 1 month followingdrug withdrawal: Left lateral tongue border with no clinicalevidence of disease.

    TABLE 1. Reported Cases of Pediatric Oral Lichenoid Drug Eruption

    AuthorNo.cases Agesex Drug implicated Site

    Clinicalfeatures

    Time onset*time resolve Comments

    Ridola et al (29) 1 20 mosM Dactinomycin Lips, face trunk, limbs Reticular,papular

    12 d1 mo Topical steroids given;resolution despitecontinued vincristine

    Kanwar et al (30) 1 4 yrsM Dactinomycin Oral NS, axillae, groinpubic region, chest

    NS 7 d1 mo

    Present case 1 15 yrsM Risperidone,carbamazepine

    BM, tongue Erosive ?mo1 mo

    *Time of lesional onset after drug administration, Time of lesional resolution after drug withdrawal.M, male; NS, not specified; BM, buccal mucosa.

    TABLE 2. OLDE-Associated Systemic Medications Used inthe Pediatric Population

    Antianxietypsychotropic agents (clonazepam, diazepam,lorazepam, temazepam, tricyclic antidepressants)

    Antibiotics (tetracycline)Anticonvulsants (carbamazepine, lorazepam, oxcarbazepine,

    phenytoin, valproate sodium)Antidiabetics (insulin)Antidiarrheals (bismuth)

    Antinflammatory agents (aspirin, fenclofenac, ibuprofen,naproxen, rofecoxib)

    Antifungals (amphotericin B, ketoconazole)Antimalarials (chloroquine, hydroxychloroquine, pyrimethamine,quinidine, quinine)Antituberculosisantimycobacterial agents (isoniazid,

    streptomycin, rifampin)Antiulcer agents (cimetidine, ranitidine, omeprazole)Bipolar agents (lithium)Chemotherapeutic agents (dactinomycin)Thyroid replacement agents (thyroxine)

    OLDE, oral lichenoid drug eruption.

    460 Pediatric Dermatology Vol. 26 No. 4 JulyAugust 2009

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    Table 2 (8,3134). Of note, several of these medications

    have been implicated in both oral and cutaneous

    lichenoid eruptions.

    The diagnosis of OLDE may be challenging due to its

    nonspecific clinical findings and rarity in the pediatric

    population. A clear temporal relationshipbetween lesion

    onset and drug intake is not always obvious due to

    variable latent periods, which ranges from an average of

    12 months (29) to reportedly 2 years in duration

    (6,24,35,36). Therefore, extended latency from initial

    drug exposure does not preclude thediagnosis of OLDE.

    Furthermore, oral lesions have presented after medica-

    tion withdrawal in exceptional cases (37). In this setting,

    a high index of clinical suspicion is required to prompt

    evaluation of a drug-inducedetiology. Lastly, identifying

    the causal agent can also become problematic in patients

    taking multiple medications, although the most recently

    administered drug should be suspected first.

    Further complicating the diagnosis of OLDE is thewide array of oral conditions that can present with lich-

    enoid-appearing lesions. The differential diagnosis for

    OLDE in a child should include OLP, lichenoid amal-

    gam reaction, and cinnamon stomatitis; less likely con-

    siderations include lesions of LE, oral manifestations of

    chronic graft-versus-host disease, and erythema multi-

    forme. The latter five conditions can be excluded by

    evaluating the following: direct contact with amalgam

    restorations,exposure to cinnamon containing products;

    systemic involvement and positive serologic tests for LE;

    history of bone marrow transplant; and characteristic

    clinical findings such as hemorrhagic crusted lips andtarget skin lesions (Table 3) (8,12). Hepatitis B vaccina-

    tion (3840) and liver disorders, such as chronic active

    hepatitis (41), have also been associated with oral

    lichenoid lesions but can be appropriately eliminated

    during history taking. Therefore, the main diagnostic

    dilemma involves differentiating OLDE from OLP, the

    latter being a rare but documented condition in children

    (4246). Clinical, microscopic, and immunologic simi-

    larities make distinction between OLDE and OLP diffi-

    cult if not impossible in certain cases. This is

    compounded by the lack of clearly defined and stan-

    dardized criteria in the diagnosis of OLDE. Attempts at

    identifying histologic features specific to OLDE have

    been met with variable success. Purported histologic

    features favoring the diagnosis of OLDE include a deep

    and diffuse subepithelial infiltrate composed of

    lymphocytes, plasma cells, neutrophils with or without

    eosinophils; perivascular inflammation; and intraepi-

    thelial colloid bodies (4,12,13,15,4749). However, most

    authors agree that these findings are not exclusive to

    OLDE and can also be seen in OLP as well as other

    mucocutaneous conditions (e.g., discoid LE) (15,47,50).

    In contrast to traditional histology, immunofluorescenceanalysis may be of help in distinguishing OLDE from

    OLP. While both conditions show similar findings on

    direct immunofluorescence studiesnamely, a shaggy

    deposition of fibrinogen along the basement membrane

    zone and immunoglobulin M-positive colloid bodies

    (5,8,51)detection of circulating basal cell cytoplasmic

    autoantibodies (BCCA) by indirect immunofluorescence

    may favor a diagnosis of OLDE (11). A positive BCCA

    test, characterized by a distinct string of pearls pattern

    on serum analysis, has been documented in OLDE by

    many authors (11,52,53) and may be a useful ancillary

    test to support a drug-induced etiology. Furthermore,immunofluorescence testing also serves to rule out

    other immune-mediated vesiculobullous diseases, such

    as LE, pemphigus vulgaris, and mucous membrane

    pemphigoid.

    TABLE 3. Differential Diagnosis of OLDE

    Condition Agesex Sites Oral lesions Diagnosis

    Oral lichen planus Middle-aged;elderlyF

    Skin: flexor surfacesOral: BM, tongue, gingival

    Bilateral, symmetric;reticular > erosive;exacerbations

    Clinical; histology; DIF

    Lichenoid amalgam

    reaction

    AnyM = F BM, lateralventral tongue;

    contact with amalgam

    White or atrophic

    striations; persistent

    Clinical; histology; ?mercury

    patch testSystemic lupuserythematosus

    Avg. 30 yrsF Multisystem: skin, kidney,cardiac

    Oral: BM, palate, gingiva

    Reticular; atrophic;nonspecific erosions

    Clinical; histology; DIF;serology for ANA, dsDNA

    Graft-versus-hostdisease

    AnyM = F Multisystem: skin, GI, liverOral: BM, tongue, Lips

    Reticular; papular;atrophic nonspecificerosions

    History of bone marrowtransplant; clinical; histology

    Erythema multiforme 2030 yrsM = F Skin: hands, feet, genitalOcular: conjunctivaOral: Lips, BM, tongue, FOM,

    soft palate

    Hemorrhagic crustingof lips; nonspecificulcers; rapid onset

    Clinical; histology to rule outother ulcerative processes

    F, female; M, male; BM, buccal mucosa; FOM, floor of mouth; DIF, direct immunofluorescence; ANA, antinuclear antibodies; dsDNA,double-stranded DNA antibodies; OLDE, oral lichenoid drug eruption.

    Woo et al: Oral Lichenoid Drug Eruption 461

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    Although thereare no universally acceptedcriteria for

    the diagnosis of OLDE, recent efforts by McCartan et al

    (17) have provided a more structured system for

    reporting cases. These authors suggest that reports

    should include: (1) an accurate clinical description of

    lesions with a defined temporal relationship with drug

    exposure, (2) evidence of histologic verification, and (3)

    documented lesion resolution on drug withdrawal.

    Moreover, lesion recurrence on drug re-challenge

    (provocation testing) and supportive immunofluores-

    cence testing will also help to confirm a medication-re-

    lated cause (5,54). Lastly, some authors have used patch

    testing as an auxiliary tool in diagnosis (55), while others

    contend that a negative patchtest cannot reliablyrule out

    OLDE (56).

    The ideal treatment for OLDE consists of drug

    withdrawal or substitution with an alternate medication

    following consultation with the patients physician (18).

    Lesion resolution is typically observed within weeks tomonths after drug cessation although delayed responses

    may result in lesion persistence (57). Furthermore, faint

    residual striations or milder forms of erosive lesions

    are commonly observed following elimination of the

    medication (12), as seen in our patient.In many instances

    however, the severity of the medical condition for which

    the patient is being treated precludes drug discontinua-

    tion. In such cases, topical steroid therapy has been used

    but with variable to little success (24). Reportedly, select

    adult patients have benefited from systemic corticoste-

    roid therapy (18), topical tacrolimus (58), and topical

    acetretin (59), although such treatments should be usedwith appropriate caution in children. Palliative remedies

    such as temporary mucosal protectants (e.g., milk of

    magnesia) may provide symptomatic relief (18). In

    addition, good oral hygiene practices are to be encour-

    aged to prevent superimposed bacterial and fungal

    infections (18).

    In this report, the patient was taking risperidone and

    carbamazepine as prescribed by his psychiatrist. Ris-

    peridone is an antipsychotic agent used to manage

    schizophrenia and bipolar disorder. This medication is

    most often associated with central nervous system side

    effects such as agitation, somnolence, and dizziness (60).

    Carbamazepine is an anticonvulsant primarily indicatedfor treatment of epilepsy with similar neurologic side-

    effects as risperidone. To our knowledge, risperidone has

    been associated with lichenoid dermatitis (60) but is nota

    documented cause of OLDE. In contrast, carbamaze-

    pine has been implicated in OLDEs (8,11,31,61), cuta-

    neous LDEs (61,62), lupus erythematosus-like drug

    eruptions (8,63,64) and fixed drug eruptions (8,65).

    Although it cannot be stated with certainty which agent

    caused the OLDE in our patient, carbamazepine is

    favored due to its more extensive history of drug

    reactions.

    In summary, the presentation of lichenoid lesions in

    the pediatric population should prompt evaluation for

    OLP and other conditions with intraoral lichenoid

    manifestations. A thorough history of systemic drug in-

    take over the previous 12 months should be documented

    as a means to eliminate or support a diagnosis of OLDE

    (5). Dueto the increasing recognitionandpharmacologic

    management of childhood-onset illnesses, including

    attention deficithyperactivity disorder (66), it is possible

    that drug-related side-effects and oral complications may

    become more prevalent in the younger population.

    Therefore, it is important for clinicians to recognize the

    spectrum of medication-induced conditions, including

    OLDE, in order to avoid delays in diagnosis and

    treatment.

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