Usually iron deficiency anemia does not cause an increase in platelet count. On the contrary, in case of long-term severe iron deficiency anemia, it also causes a decrease in platelet count, because iron deficiency anemia is a type of anemia caused by iron deficiency in the body. Iron deficiency is commonly caused by insufficient iron intake, impaired absorption, and loss of red blood cells. After iron deficiency anemia the patient will experience pallor, dizziness, weakness, headache, panic after activity, chest tightness, and soreness of the limbs. Iron deficiency anemia also causes symptoms of iron deficiency in tissues, which manifest as dry hair, dry yellow, hair loss, keratitis, and sometimes a series of symptoms such as difficulty in swallowing and heterophagia. During routine blood tests, patients with iron deficiency anemia will show microcytic hypochromic anemia, however, the platelet count usually remains unchanged. Of course, in long-term severe iron deficiency anemia, the platelet count may also show a mild decrease, but in general the platelet count will not increase.