What is the difference between brain edema and edema?

Edema is a kind of disease in which fluid gathers under the skin and tissue space. Brain edema is a kind of disease in which fluid gathers in cells or cell space. Different parts of the disease occur. Edema can appear in the face, limbs and whole body. Serious cases can cause pleural effusion, pericardial effusion and peritoneal effusion. Brain edema is cerebral origin, and the causes are different. Edema can be divided into cardiogenic, nephrogenic and dystrophic edema. Brain edema is caused by hemorrhagic and ischemic cerebrovascular diseases, brain bacteria and virus infections. Different treatment methods, edema can be treated with furosemide and hydrochlorothiazide, can not be treated with mannitol. And brain edema can be treated with mannitol and furosemide, hydrochlorothiazide. Brain edema and edema in various parts of the clinical manifestations are not the same, brain edema can only be called brain edema, can not be called brain edema.