Recurrence of non-sexually acquired acute genital ulceration following COVID-19 vaccination.

There is a rare subset of non-sexually acquired acute genital ulcers, previously called Lipschutz ulcers, that are often preceded by a constitutional prodrome and have been associated with multiple viral and bacterial infections. These ulcers are categorized by some as a variant of complex aphthosis, with one hypothesized etiology involving a non-specific systemic inflammatory response to acute infection or vaccination. Although painful, these lesions resolve over the course of several weeks and recurrence is rare but possible.

Follicular occlusion triad: an isotopic response or adverse effect of rituximab?

Follicular occlusion triad is a symptom complex of three conditions with a similar pathophysiology including hidradenitis suppurativa (HS), dissecting cellulitis of the scalp, and acne conglobata. Although the exact pathogenesis of the triad is unknown, it appears to be related to follicular occlusion in areas with apocrine glands. Wolf isotopic response refers to the occurrence of a new dermatosis at the site of another, unrelated, previously healed dermatosis.

Successful treatment of two individual cases of generalized granuloma annulare with amoxicillin/clavulanic acid and a combination of doxycycline and pentoxifylline.

Granuloma annulare is a benign inflammatory skin disease potentially related to a delayed hypersensitivity reaction to the dermis. Generalized granuloma annulare (GGA) manifests as diffuse skin-colored to erythematous annular or nummular plaques affecting at least the trunk and either upper or lower extremities, or both. GGA is resistant to many therapeutic modalities, making it difficult to treat.

Rituximab treatment of pemphigus in women of childbearing age: experience with two patients.

Pemphigus vulgaris is an autoimmune blistering disorder treated with systemic steroids and immunosuppressive agents. Treatment of this disorder in young women of childbearing age must take into consideration the patient's desire for pregnancy and effects of the treatment on both mother and child. We report two young women with pemphigus, initially treated with standard immunosuppressive medications, who expressed their wishes for pregnancy.

Polymorphic eruption of pregnancy.

Polymorphic eruption of pregnancy (PEP), a specific dermatosis of pregnancy also known as pruritic urticarial papules and plaques of pregnancy (PUPPP), is a benign, self-limited skin disorder. Key features include an increased prevalence in primigravidas, onset in the third trimester, remission near the time of delivery, and association with multiple gestation pregnancy. The clinical features are crucial to diagnosis.

IgM ocular cicatricial pemphigoid: a unique insight into the immune system.

A 42-year-old man with ocular erythema and scarring had a conjunctival biopsy revealing depostion of IgM and C3 without IgG at the epithelial basement membrane zone.  Treatment with doxycyline, dapsone, and mycophenolate mofetil was unsuccessful and treatment with rituximab has led to partial remission of the conjunctival inflammation. He has undergone 4 cycles of rituximab treatment at intervals of 12 to 18 months.

Successful long-term thalidomide therapy for discoid lupus erythematosus-lichen planus overlap syndrome.

Although thalidomide is a U.S. Food and Drug Admistration (FDA) approved medication for erythema nodosum leprosum and multiple myeloma, it has many off-label uses, including for discoid lupus erythematosus (DLE), Behçet's disease, apththous ulcers in HIV patients, and prurigo nodularis.

Adalimumab Induced Subcutaneous Nodular Sarcoidosis; A Rare Side Effect of Tumor Necrosis Factor-α Inhibitor.

Adalimumab and other tumor necrosis factor-α inhibitors have been shown in the recent years to successfully treat sarcoidosis refractory to systemic corticosteroids and other agents.  However, there have been an increasing number of cases of sarcoidosis paradoxically induced by these agents.  It is hypothesized that this is due to the disruption of the fine balance of cytokines involved in granuloma formation.

A hyperpigmented perianal nodule.

Basal cell carcinoma (BCC) is the most common cutaneous malignancy. Ultraviolet light is an important risk factor for the pathogenesis of BCCs; the vast majority are found in sun-exposed areas. BCCs occurring in the perianal or genital regions are seldom seen.

Genital ulcers associated with Epstein-Barr virus.

Genital ulcerations are a rare clinical finding of Epstein-Barr virus (EBV) infection. We present the case of a 16-year-old adolescent girl who reported the onset of diarrhea, headaches, dysuria, and vaginal discharge along with vulvar ulcerations with edema. Laboratory studies revealed a high-quantitative EBV IgG and early antigen as well as a positive IgM antibody for EBV.

Kaposi's sarcoma and other manifestations of human herpesvirus 8.

Unlabelled: Kaposi's sarcoma (KS) was described by Moritz Kaposi in 1872 and was known for an entire century as a rare disorder of older men usually of Eastern European, Mediterranean, and/or Jewish origin. In the early 1980s, the prevalence of KS began to increase dramatically and soon became the most common malignancy in patients with AIDS, especially those who were male homosexuals. In 1994, a new human herpesvirus (HHV) was found to be present in almost 100% of KS lesions.