You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is "Pinch" purpura is diagnostic of - and explain in detail?
Pinch Purpura: A Cutaneous. Manifestation of Systemic. Amyloidosis Amyloid purpura is a condition marked by bleeding under the skin (purpura) in some individuals with amyloidosis. Its cause is unknown, but coagulation defects caused by amyloid are thought to contribute presentation: Amyloid purpura usually occurs above the nipple-line and is found in the webbing of the neck and in the face and eyelids Ref Harrison20th edition pg 1245