Leprosy is an infectious disease of chronic evolution caused by Mycobacterium leprae. Its chronic course can be interrupted by acute or subacute reactional episodes. Lucius phenomenon is a vasculitic immune reaction that occurs in patients with lepromatous leprosy. It appears with purpuric macules that progress to ascending necrosis and ulceration and heal with an atrophic scar. The authors describe the case of...
Granuloma faciale is a rare, benign, idiopathic skin disorder, observed predominantly in caucasian men between the third and fifth decades of life. It is characterized histologically by a mixed inflammatory infiltrate, in which phenomena of vasculitis and fibrosis are associated. It occurs predominantly in the face and has a chronic and slowly progressive course. Its diagnosis is based on clinical and histopath...
Paracoccidioidomycosis (also known as Lutz disease, Lutz-Splendore-Almeida disease, Brazilian blastomycosis or South American blastomycosis) was first described by Lutz nearly a century ago. This is a systemic fungal infection that can appear in two clinical forms: acute / subacute or chronic. Oral lesions of paracoccidioidomycosis are typically characterized by erythematous and finely granular gingival hyperpl...
Sporotrichosis is a chronic infection of the skin and subcutaneous tissue, caused by the fungus Sporothrix schenkii. In childhood this entity is rare and currently the most frequent in this age group is the zoonotic transmission. The delay in diagnosis and inadvertent use of multiple antimicrobial regimens favor disease progression, therefore causing pain and subsequent scars. The main differential diagnosis fo...