G.J.
When my daughter was about 4 or 5 she began developing small fevers... Every evening around 5 or 6 she would have a low grade fever of about 100 - 101. Her ped ruled out everything imaginable & finally decided she had an allergy to some unknown substance that she came into contact with. She took Benadryl for it. Eventually it went away - it was just gone. Never noticed anything different - soap, soup, bug spray (we lived in an apartment complex with pest control), milk all the same. It just went away as mysteriously as it had come...