Pemphigus vulgaris is an autoimmune bullous dermatosis presenting with flaccid blisters and erosions. The morphology of pemphigus reflects the more superficial intraepidermal level of split seen histologically in contrast with pemphigoid, where the level of split is deep below the epidermis. This is a case of a 58-year-old male clinically presenting with arcuate tense bullae, which are more characteristic of the pemphigoid group of disorders, which revealed an intraepidermal split and tombstoning pattern of the basal epidermis on histopathology. Direct immunofluorescence revealed intercellular IgG and C3 distribution. Although this patient presented clinically with tense bullae, the histopathology and direct immunofluorescence results were consistent with pemphigus vulgaris.
Pemphigus ; Fluorescent Antibody Technique, Direct

Hailey-Hailey disease (HHD) is an uncommon acantholytic disorder of the skin. This is a case of a 64-year-old Filipino female with a chronic history of painful and malodorous intertriginous plaques. Histopathologic evaluation showed overlapping features of pemphigus vulgaris and Hailey-Hailey disease. A negative direct immunofluorescence test clinched the diagnosis of Hailey-Hailey disease. The patient was advised regarding preventive measures and treated with topical antibiotics and corticosteroids with improvement of her lesions.
Pemphigus, Benign Familial ; Fluorescent Antibody Technique, Direct

Introduction: Mastocytosis is a disease defined by the proliferation of mast cells in organs, most commonly the skin. It may affect any age group but is usually found in children in the first year of life. We present a case of diffuse cutaneous mastocytosis manifesting in the rare bullous form. Case: A 4-month-old Filipino male presented with multiple bullae on the head, trunk, and extremities after applying chamomile oil. Biopsy of the skin demonstrated numerous mast cells, confirming the diagnosis of bullous mastocytosis. The patient was treated with oral antihistamines and corticosteroids, which was followed by a good response. Conclusion Diagnosis of diffuse cutaneous mastocytosis may be challenging due to its rarity. Proper management requires preventive measures, symptomatic treatment, as well as communication of prognosis with the stakeholders.
Mastocytosis, Cutaneous

Bullous pemphigoid (BP) is the most common autoimmune blistering disease primarily characterized by tense blisters and occasionally with urticarial plaques, affecting the skin and mucous membranes. These are caused by autoantibodies against BP180 and BP230 which target antigens on the basement membrane zone. The diagnosis relies on the integration of clinical, histopathological, immunopathological, and serological findings. The management depends on the clinical extent and severity. We present in this article a literature review and the clinical consensus guidelines of the Immunodermatology Subspecialty Core Group of the Philippine Dermatological Society in the management of BP.
Pemphigoid, Bullous