Symptoms of fat embolism mainly include cardiopulmonary function abnormalities, neurological abnormalities, skin rash, etc. Fat embolism can be mild or severe, and it is recommended to consult a doctor in time to avoid aggravation of the condition, or even life-threatening. 1. Abnormal cardiopulmonary function: large fat embolism will cause acute cardiopulmonary failure, mainly manifested as right heart failure. Smaller fat embolism will cause some changes in the respiratory system, such as dyspnea and purple lips. 2. Neurological abnormalities: fat embolism of blood vessels in the brain will appear a series of neurological symptoms such as fuzzy consciousness, drowsiness, irritability and so on. 3. Rash: reddish-brown blotchy rash will appear, mostly distributed in the conjunctiva, mouth, neck, chest, arms, etc., which can disappear gradually after a few days. 4. Accompanying symptoms: there will be rapid heartbeat, fever, low blood pressure, vision changes and other accompanying changes. If you suspect fat embolism, you must consult a doctor in time and standardize the treatment under the guidance of a professional doctor to avoid delaying the condition.