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.
Thrombocytopenia is the medical term for a low blood platelet count. Platelets (thrombocytes) are minute, disk shaped particles in the blood that promote clotting. When an injury causes a blood vessel to break, the platelets are activated causing them to become spiny.diopathic thrombocytopenic purpura is such a rare disorder that a diagnosis is rendered only after all other possible conditions that could cause purpura have been eliminated. This is called a âdiagnosis of exclusionâ.