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UNASSIGNED: Erythema nodosum (EN) is a self-limited septal panniculitis that presents with fever, arthralgia, and arthritis. Tumor necrosis factor alpha (TNF-α) inhibitor such as golimumab has been found to treat EN in inflammatory bowel diseases (IBD). We herein report the paradoxical occurrence of EN following golimumab for ankylosing spondylitis.
UNASSIGNED: A 34-year-old female presented in June 2022 with a complaint of \'sores\' on her feet that intermittently presented for approximately 5 months but that had worsened dramatically in the last 24 h. The patient had an 8-year history of ankylosing spondylitis for 7 years. Subcutaneous golimumab was administered every 4 weeks as she had not responded to other treatments. Twenty-four hours after the fifth subcutaneous injection, painful, erythematous nodules appeared, histologically compatible with EN. Despite this side effect, we continue therapy due to the good response and efficacy.
UNASSIGNED: Skin reactions were associated with the treatment with golimumab, including warm tender skin around the injection site, eruptions, itchiness, and sometimes a full-body rash. Golimumab was successfully used in treating EN in Crohn\'s disease. Because our patient continued on golimumab, the temporal association of EN flares with therapeutic injection and the lack of any etiology support a direct causal relationship between EN and golimumab treatment.
UNASSIGNED: TNF-α inhibitors are useful in treating Crohn\'s disease patients with EN, although it may present as an adverse effect of this treatment. Further work is needed.

Tuberculids are a group of dermatoses with tuberculoid histology and the absence of tubercle bacilli. They are considered to be hypersensitivity reactions to circulating Mycobacterium tuberculosis (M. tb) or its antigens in individuals with good immunity. The objective of the review is to provide a detailed literature review of all available articles on tuberculids in the past 10 years and provide an update on epidemiology, etiopathogenetic mechanisms, clinical manifestations, and treatment. A search was performed on PubMed using the keywords lichen scrofulosorum, papulonecrotic tuberculid, erythema induratum, and erythema nodosum tuberculosis for all articles, with no restrictions on age, gender, or nationalities. An update on tuberculids, including some new concepts in pathogenesis, atypical presentations, new investigative modalities, and treatments are reviewed.

Goserelin acetate is a gonadotropin-releasing hormone analog that is commonly used in patients with prostate cancer, endometriosis, and precocious puberty. The side effects of the drug include allergic rash, flushing, excessive sweating, skin swelling at the injection site, sexual dysfunction, erectile dysfunction, and menopausal symptoms. However, erythema nodosum has so far not been reported. In this paper, we have presented the case of erythema nodosum caused by goserelin acetate and a review of the literature on its adverse effects, thus providing useful insights into clinical management and medication safety.

Löfgren syndrome is an acute presentation of sarcoidosis that comprises fever, bilateral and symmetric hilar lymphadenopathies, polyarthritis, and erythema. We present the case of a 34-year-old male patient who presented with ankle monoarthritis without a history of a traumatic event. Contralateral ankle arthritis associated with erythema nodosum and fever developed one week later. Laboratory tests showed anemia, thrombocytosis, and elevated inflammatory parameters. A chest CT revealed symmetrical mediastinal and hilar adenopathies. A transbronchial biopsy was compatible with granulomatous lymphadenitis, and the diagnosis of Löfgren syndrome was confirmed. Our case report and literature review emphasize the wide web of mimicry of acute sarcoidosis. Secondary forms of acute sarcoidosis are likely to benefit from additional and more complex immunomodulatory therapies. Close monitoring and follow-up should be conducted because it is possible that these patients experience higher rates of recurrence or relapse.

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The aim of this article is to present the case of acute febrile neutrophilic dermatosis (Sweet syndrome-SS) after Ad26.COV2.S vaccination against SARS-CoV-2. To the best of our knowledge, this is the second case of SS provoked by this specific vaccine. What is more, the mildly symptomatic beginning of the disease, later followed by typical SS manifestation with a variety of symptoms including nodular erythema of the feet and oral ulcerations, made it very challenging to establish the diagnosis. The article focuses on the current literature on the acute febrile neutrophilic dermatosis, along with the coexistence with other neutrophilic dermatoses and anti-SARS-CoV-2 vaccinations as provoking factors. It emphasizes the necessity for sharing the knowledge and experience on the subject of SS\'s clinical manifestations and underlying causes to facilitate prompt diagnosis and introduction of appropriate treatment.

Sarcoidosis is an enigma diagnosed by ruling out other etiologies of granulomatous inflammation. The multisystem manifestations of sarcoidosis and the clinical polymorphism pose a diagnostic challenge to all physicians. The skin is the most commonly affected organ after the lungs in sarcoidosis. Dermatological manifestations can appear before, during, or after systemic involvement, and the type of skin lesion can have prognostic significance. Also, a biopsy of skin lesions is less invasive and more accessible to perform than a biopsy of visceral organs. Thus, in certain ways, cutaneous manifestations can aid in the diagnosis and prognosis of systemic disease. This article has focused on the frequently encountered skin lesions of sarcoidosis along with their prevalence, clinical features, and management.

Erythema nodosum (EN) is a common panniculitis characterized by tender erythematous nodules predominantly on the pretibial area and represents a hypersensitivity reaction to multiple triggers. COVID19 infection and vaccination have been associated with EN in the adult population. We report a pediatric case of EN following COVID19 infection and review the literature on COVID19 infection and COVID19 immunization-related EN.