You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Cutaneous leucocytoclastic vasculitis associated with oxacillin. A 67-year-old man who was treated with oxacillin for one week because of Staphylococcus aureus bacteremia, developed renal failure and diffuse, symmetric, palpable purpuric lesions on his feet. Necrotic blisters were noted on his fingers. Skin biopsies showed findings diagnostic of leucocytoclastic vasculitis. Oxacillin was discontinued and patient was treated with corticosteroids. The rash disappeared after three weeks and renal function returned to normal. Leucocytoclastic vasculitis presents as palpable purpura of the lower extremities often accompanied by abdominal pain, arthralgia, and renal involvement. Etiologic factors or associated disorders include infections, medications, collagen vascular disease and neoplasia. However, in half of the cases no etiologic factor is identified. Usually it is a self-limited disorder, but corticosteroid therapy may be needed in life-threatening cases since early treatment with corticosteroids in severe cases can prevent complications. Oxacillin should be included among the drugs that can cause leucocytoclastic vasculitis.
{"Chemical": ["corticosteroids", "corticosteroid", "oxacillin", "Oxacillin"], "Disease": ["neoplasia", "renal involvement", "leucocytoclastic vasculitis", "Necrotic", "abdominal pain", "infections", "purpuric lesions", "bacteremia", "arthralgia", "purpura", "collagen vascular disease", "blisters", "renal failure", "Necrotic blisters", "Leucocytoclastic vasculitis", "Staphylococcus aureus bacteremia", "rash", "Cutaneous leucocytoclastic vasculitis"]}