<s>[INST] My 21 month old daughter had an abdominal ultrasound yesterday and the technician said she had an excessive number of lymph nodes present. She has recently lost a lot of weight and has recurrent viral infections. She has trouble sleeping and can be very irritable. Is this all related and what could possibly be the cause? [/INST] Brief answer:Could be tuberculosis. Detailed answer:Hi, welcome to Chat Doctor. Your child has weight loss and ultrasound shows multiple lymph nodes with recurrent illness. There is a possibility of tuberculosis in child. In my opinion, you should do CBC with ESR, contour test and x-ray chest to rule out tuberculosis. Revert with above reports. I hope this will help you. Wishing your child good health. Take care. Regards: Chat Doctor.  </s>