1, weak and weak: fatigue, drowsiness, is the result of muscle hypoxia. It is the most common and earliest symptom.
2, skin, mucous membrane pale: skin, mucous membrane, conjunctiva, and the distribution of skin capillaries and the effects of diastolic and contractile factors. Generally, the size of the palm of the thenar tarsal conjunctival and nail bed color is reliable.
3, cardiovascular system: palpitation is one of the most prominent symptoms. It has tachycardia. Soft systolic murmur can be heard in apical or pulmonary valve area, known as anemic murmur, and severe anemia can hear diastolic murmurs.
4, respiratory system: acute or respiratory difficulty, most of which are caused by hypoxic or hypercapnia.
5, the central nervous system: dizziness, headache, tinnitus, vertigo, inattention, lethargy and other symptoms are common. Syncope even blurred consciousness can occur in severe anemia or abrupt, especially in elderly patients.
6, digestive system: anorexia, abdominal distention, nausea, constipation, and so on as the most common symptoms.
7, reproductive system: women often have menstrual disorders, such as amenorrhea or too much menorrhagia.
8, urinary system: anemia with severe anemia can have mild proteinuria and urine concentration reduction.