Juvenile Dermatomyositis: - A Case Report

Sir, The 7-year-old boy presented to the Dermatology Outpatient Department of a tertiary care center with the main complaints of lesions over each elbow and knuckles of each hand for the past year. The clinical examination found skin-colored to hypopigmented papules, known as Gottron papules, over each elbow joint, dorsal thinning of meta phalangeal joints, and symmetric proximal muscle weakness of upper limbs [Figure 1]. Other signs and symptoms of dermatomyositis, like heliotrope rash and calcinosis cutis, turned absent. On dermoscopy of nails, the cuticles have been ragged in the proximal nail fold, dilated capillary loops alternating with vessel dropout, telangiectasias, and hypopigmentation of arms have been visible. A skin punch biopsy from the papule was performed and hematological investigations were done. Both have confirmed the presence of lymphocytes, plasma cells, and a few eosinophilic infiltrates within the dermis. All routine investigations (CBC, LFT, RFT) have been completed and are within normal limits. Special antibody assessments were conducted because of the unavailability of the facility to perform them. Only on the premise of the scientific and histopathological examinations, the prognosis of dermatomyositis of stripling onset was made. The patient was on topical and systemic steroids daily (oral prednisolone 5mg and topical mometasone furoate 0.1%) along with emollients and immunosuppressant oral methotrexate 2.5mg every week for 4 months. The biopsy was repeated after 4 months, showing decreased plasma cells and lymphocytes. The development turned visible over the skin and in nail capillaroscopy. [Figure 2].Figure 1: Pre-treatment. Clinically - The presence of Gottron papules over meta phalangeal joints. Dermoscopic findings - Dilated nail capillary loops with vessel dropoutsFigure 2: Post-treatment. Clinically - resolution of Gottron papules. Dermoscopic findings - No dilated capillary loops and vessel dropoutsJuvenile dermatomyositis (JDM) is an unprecedented autoimmune connective tissue ailment, part of a heterogeneous organization of muscle illnesses known as idiopathic inflammatory myopathy. This ailment’s unique etiology is unclear; however, each immune disorder and environmental element can contribute to its etiopathogenesis. It is reported at an annual incidence of two to four cases per million children per year.[1] This ailment mainly influences the skin and the striated muscle mass, resulting in a feature rash and proximal muscle weakness. The prognosis of JDM was made using the “Bohan and Peter standards” in 1975. The diagnostic standards encompass skin rash, symmetric muscle weakness, decreased proximal muscle mass, elevated stages of serum muscle enzymes, myopathic electromyography, and feature pathologic adjustments found via muscle biopsy.[2] The case reported above fulfilled several additives of the diagnostic standards for JDM. Diagnostic criteria yield may be improved by incorporating new techniques, including magnetic resonance imaging and ultrasonography.[3,4] Long-standing cases are the leading cause of morbidity and have been connected to younger age at sickness onset and encompass extended and intense muscle weakness with muscle atrophy, cutaneous calcifications, scarring or atrophy, and lipodystrophy with the presence of anti-NXP2 autoantibodies.[4,5] In addition, anti-p155/140 antibodies are reported in 22% to 29% of sufferers with JDM, 13% to 21% of sufferers with adult-onset dermatomyositis, and maximum sufferers with malignancy-related dermatomyositis.[6-10] This antibody’s presence in JDM sufferers has been proven to correlate with a scientific phenotype comprising intense cutaneous manifestations.[11] In our case, the antibody degree could not be measured because of this nonavailability at our center. Histopathology, as in our case, exhibits the presence of lymphocytes, plasma cells, and a few eosinophilic infiltrates within the dermis. Although there are no mounted protocols for controlling sufferers with JDM, there is sufficient proof to indicate that early competitive control improves results.[12] Since the creation of corticosteroids, vast developments in scientific and purposeful results have been completed; hence, they continue to be the mainstay of the remedy.[13] Conclusion To conclude, we have provided the case of a young boy with a few classical scientific and histopathological findings of unprecedented autoimmune ailments. This case has been stated for its rarity and to emphasize the significance of early and competitive remedies to save the long-time sickness sequels, which have been regrettably visible in our affected person. Diagnosis and early immunosuppressive treatment of sickness are crucial to lessen the load of long-standing disease. Declaration of patient consent The authors certify that they have obtained all appropriate patient consent forms. In the form, the patient(s) has/have given his/her/their consent for his/her/their images and other clinical information to be reported in the journal. The patients understand that their names and initials will not be published and due efforts will be made to conceal their identity, but anonymity cannot be guaranteed. Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.