My girlfriend is experiencing temperature changes. She will say she is hot and she is sweaty, but her skin feels cold. This is vise versa. She's been experiencing headaches, trouble sleeping, fatigue, loss of appetite, stomach hurting, and spleen hurting (she has mononucleosis). We figured it was just her mono flaring up, but some symptoms seem weird. Can I get any information about what this could be? Thank you in advanced.