It is not normal to feel lymph nodes in the armpit. Normally, lymph nodes are less than 0.5 cm in diameter and are located in the tissue spaces that cannot be touched. If enlarged lymph nodes can be felt, it means that there is inflammation or other problems. Lymph nodes are part of the body’s immune organs and when the body suffers from bacterial infections, viral infections and special bacterial infections such as tuberculosis bacilli there will be an increase in lymphocytes, which will manifest as swollen lymph nodes, which can be felt on the surface of the body. Therefore, you need to go to the hospital in time. The doctor will do a physical examination and then laboratory tests, such as routine blood tests, C-reactive protein, axillary ultrasound or CT, to see the specific condition. Based on the results, anti-inflammatory treatment or lymph node biopsy will be performed to clarify the nature of the condition and to formulate the next treatment plan.