red dots?

hi my name is kim i am new to this thing but i hav a question..... i have had theses small little dots on my underarm and now they have seemed to get bigger within 2 weeks and now i am getting them on my forarm but they do not itch or irritate me.do you have any idea what it could be?

[Dr. Kokil Mathur]

Hi
Welcome to the forum!
The red dots can be nevi and these are normal findings. However these red dots can also be petechiae. The commonest cause of petechiae is a low platelet count (thrombocytopenia).
They can also result from autoimmune disorders, such as lupus or rheumatoid arthritis,  bone marrow disorders such as leukemia, inflammation of the veins, as a side effect of certain medications including the vaccine itself, viral infections, such as EBV and septicemia or infection in blood. A complete blood count, urine examination and a blood culture may be required to reach a diagnosis.
These can also be bruises. The commonest cause is contraceptive pill intake. If you are not on any medications like anticoagulants, blood thinners or birth control pills then bruises could be due to clotting disorders, fragile spider veins, deep vein thrombus, deficiency of Vitamin B12, folic acid, or Vit K, a liver disease or certain cancers.
It is difficult to comment beyond this without examining. Do discuss this with your doctor and get yourself examined.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!