Scleromyxedema is a primary cutaneous mucinosis characterized by a diffuse and generalized papular skin eruption of mucinous deposits throughout the upper dermis. In addition to dermatologic manifestations, scleromyxedema may involve the cardiopulmonary, gastrointestinal, renal and nervous systems. Dermato-neuro syndrome (DNS) is a rare, severe neurologic complication of scleromyxedema.1,2 The pathogenesis of DNS is unknown, but…
Acute febrile neutrophilic dermatosis, or Sweet syndrome, is an inflammatory disease that classically presents with fever, leukocytosis and tender, erythematous plaques characterized by neutrophilic infiltrates on biopsy. Sweet syndrome has been reported in association with several autoimmune diseases, including inflammatory bowel disease, systemic lupus erythematous, rheumatoid arthritis and sarcoidosis.1 Here, we discuss a case of…
A 25-year-old Mexican American woman with a five-year history of systemic lupus erythematosus (SLE) presents with refractory, acute cutaneous lupus erythematosus (ACLE) and subacute cutaneous lupus erythematosus (SCLE) affecting the scalp, face and hands. Her serologic phenotype is characterized by elevated anti-nuclear, anti-double-stranded deoxyribonucleic acid (dsDNA), anti-ribonucleoprotein (RNP), anti-Smith and anti-SS-A (Ro) antibodies and chronically…
Abscesses are typically caused by infections, but some are, instead, sterile. Aseptic abscesses (AAs) are characterized by the same neutrophil-rich histopathology as infectious abscesses; however, they don’t improve with antibiotics. Rather, AAs require treatment with anti-inflammatory medications. Although relatively rare, this phenomenon is important for rheumatologists to recognize given its frequent association with underlying systemic…
Eosinophilic granulomatosis with polyangiitis (EGPA) is an anti-neutrophil cytoplasmic antibody-associated vasculitis typically characterized by asthma, peripheral eosinophilia and medium- to small-vessel necrotizing vasculitis. Cutaneous manifestations in EGPA are diverse. Palpable purpura is the most common presentation, but urticaria, erythematous macules and papules, livedo reticularis, digital necrosis and cutaneous nodules have also been described.1 Non-hemorrhagic bullae…
The COVID-19 pandemic has filled hospitals with patients with rapidly progressive respiratory failure and diffuse bilateral opacities on chest X-ray.1 Additionally, many patients with severe COVID-19 develop acute kidney injury and require dialysis.2 Pulmonary-renal syndromes are also important to consider in this setting. Although alveolar hemorrhage is a cardinal feature of this syndrome, many patients…
Lipoma arborescens is a rare, benign intra-articular lesion characterized by diffuse replacement of synovial tissue by mature adipocytes, causing a villous lipomatous proliferation of the synovial membrane.1 Typically, this is a monoarticular condition, with the knee being the most commonly affected although it has been rarely reported to occur in an oligo-/polyarticular fashion and in…
Cannabis arteritis mirrors thromboangiitis obliterans in its clinical and arteriographic presentation, but its relevant exposure is cannabis rather than tobacco.1 Whether cannabis arteritis is a subset of thromboangiitis obliterans or a unique pathologic entity is debatable. Delta-9-tetrahydrocannabinol, the primary psychoactive component of cannabis, is a peripheral vasoconstrictor.2 This offers mechanistic insight into how cannabis may…
In certain ethnic populations and geographic locations, being a genetic carrier of sickle cell trait is common. Despite its prevalence, a recent report studied 100 mothers who were informed their newborn child had tested positive for sickle cell trait, and of these mothers less than half were aware of their carrier status prior to conception.1…
Sarcoidosis is a multisystem disease characterized by noncaseating granulomas in affected tissues, mostly involving the lungs and lymph nodes.1,2 The etiology of sarcoidosis remains unknown but is thought to be due to an inflammatory response to an antigen exposure in genetically predisposed individuals.1 Tumor necrosis factor-α (TNF‑α), a pro-inflammatory cytokine, plays an essential role in…