ABSTRACT
AbstractLivedo reticularis is a spastic-anatomical condition of the small vessels which translates morphologically by a reticular pattern, interspersing cyanosis, pallor and erythema. The same can be congenital or acquired. Among the acquired, we highlight the physiological livedo reticularis and the idiopathic livedo by vasospasm; the latter configures the most common cause. The drug-induced type is less common. The drugs amantadine and norepinephrine are often implicated. Cyanosis is usually reversible if the causative factor is removed, however, with chronicity, the vessels may become permanently dilated and telangiectatic. We report a case of a patient diagnosed with Parkinson's disease with chronic livedo reticularis associated with the use of amantadine and improvement after discontinuation of the drug.
Subject(s)
Aged , Humans , Male , Amantadine/adverse effects , Antiparkinson Agents/adverse effects , Livedo Reticularis/chemically induced , Livedo Reticularis/pathology , Parkinson Disease/drug therapy , Skin/blood supply , Skin/pathologyABSTRACT
Eritromelalgia é uma doença rara caracterizada pela tríade: eritema, calor e dor em queimação. Pode envolver os pés, as mãos e, menos comumente, o segmento cefálico. Geralmente é bilateral, entretanto, pode manifestar-se de forma unilateral. O resfriamento das áreas afetadas pode resultar em alívio dos sintomas. Relatamos um caso de eritromelalgia no pavilhão auricular direito, uma localização não habitual.