1. platelets are sometimes called . 2. platelets are continually produced in the by . 3. normally, the concentration of platelets in an adult ranges from , although the count may rise further during times of stress. 4. platelets can circulate in the blood for 8 to 10 days, unless they are needed earlier for blood clotting. an abnormally small number of platelets in circulating blood is termed .

Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.