In february 2019 lymph nodes inflamed up to 1 cm very very painful just cervical. i did a lot of analysis but nobody knows what i have. immunoglobulin m increased 240 (max 230), the rest are ok?

If you had a viral or bacterial disease around that time, sometimes subclinical, a tender reactive lymph node could be present. Immunoglubolin M (IgM) is usually elevated in the first phase of an acute infection and it could correlate with the tender lymphadenopathy. I wonder if you exposed to certain animals at that time such as rabbit or other farm animals.