Your platelet count may be low too, for the same reason. This can cause unexplained bruising or bleeding, such as nose bleeds. Abnormal lymphocytes may collect in the lymph glands and cause painless swelling in your neck, armpits or groin. Your spleen may become enlarged and cause a tender lump in the upper left-hand side of your abdomen. Sweating or fever at night can also sometimes occur.
Some people lose weight.
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