My 16 Year Old Daughter Woke Up This Morning With

my 16 year old daughter woke up this morning with soreness under both arms. Now she feels feverish, actually has a fever of 100.2
and when I looked under her arms, both her underarms have swelled red mounds under them. I know that it could simply be an allergic reaction altho she has not
changed deodorants. Could leukemia or lymphoma present so symmetrically. One armpit looks worse than the other.