Certain conditions may trigger additional production of blood cells. When the oxygen content of body tissues is low or the number of red blood cells decreases, the kidneys produce and release erythropoietin, a hormone that stimulates the bone marrow to produce more red blood cells.The bone marrow produces and releases more white blood cells in response to infections.ertain conditions may trigger additional production of blood cells. When the oxygen content of body tissues is low or the number of red blood cells decreases, the kidneys produce and release erythropoietin, a hormone that stimulates the bone marrow to produce more red blood cells.
A Painful Armpit Lump may be Caused by Shaving or Deodorant. Although a painful armpit lump may have many causes there may be a very simple explanation for your condition. âCysts and infections on the surface of the skin of the armpit may be caused by shaving or use of antiperspirants (as opposed to deodorants).
Overview. Your armpit can be a dark, sweaty place. And itâs ripe for irritation. People may not see a rash in your armpit â thank goodness â but the itch and irritation can be unbearable. Maybe your rash is bumpy and red, or scaly and white. There are many potential causes for underarm rashes, and likewise, many treatments. Determining the cause of the irritation could lead you toward relief.