Find possible causes of numbness or tingling in hands based on specific factors. Check one or more factors on this page that apply to your symptom. Numbness or tingling. 1  Affects both hands. 2  Affects one hand.  Is intermittent.
These cells produce melanin, the substance that gives skin its color. Skin with too much melanin is called hyperpigmented skin. Skin with too little melanin is called hypopigmented skin. Pale skin areas are due to too little melanin or underactive melanocytes. Darker areas of skin (or an area that tans more easily) occurs when you have more melanin or overactive melanocytes. Bronzing of the skin may sometimes be mistaken for a suntan.
All blood cells start as the same type of cell, called a stem cell. Stem cells then develop into one of four different types, which in turn become red blood cells, platelets, or different types of white blood cells. In acute myeloid leukaemia, the bone marrow makes too many white cells called monocytes or granulocytes.The cells made are not fully developed and do not work normally.tem cells then develop into one of four different types, which in turn become red blood cells, platelets, or different types of white blood cells. In acute myeloid leukaemia, the bone marrow makes too many white cells called monocytes or granulocytes. The cells made are not fully developed and do not work normally.