Thrombus can be divided into cerebral thrombosis, lower limb deep vein thrombosis, pulmonary artery thrombosis, coronary artery thrombosis, etc. according to the location. Thrombus formed in different locations can cause different clinical symptoms.

1. Cerebral thrombosis: Symptoms vary depending on the artery involved. For example, if the internal carotid artery system is involved, patients often suffer from hemiplegia, blindness in the affected eye, drowsiness and other mental symptoms. They may have varying degrees of aphasia, agnosia, and even Horner syndrome, that is, miosis, enophthalmos, and anhidrosis on the affected side of the forehead. When the vertebrobasilar artery is involved, dizziness, nystagmus, ataxia, and even high fever, coma, and pinpoint pupils may occur;

2. Deep vein thrombosis of the lower limbs: Common symptoms include swelling and tenderness of the lower limbs. In the acute stage, the skin becomes red, hot, and swollen severely. The skin turns purple and the temperature drops. The patient may have mobility impairment, may suffer from claudication, or may suffer from severe pain. unable to walk;

3. Pulmonary embolism: Patients may experience symptoms such as dyspnea, chest pain, hemoptysis, cough, palpitations, syncope, etc. Symptoms in the elderly may be atypical and have no outstanding specific manifestations;

4. Coronary artery thrombosis: Due to different degrees of myocardial ischemia, the manifestations are also inconsistent. Common symptoms include tightening or squeezing retrosternal pain, that is, angina pectoris. Dyspnea, palpitations, chest tightness, etc. may also occur, and occasionally a sense of impending death. The pain can radiate to the shoulders, back, and arms, and some patients may even present with atypical symptoms such as toothache.