My friends daughter was mad at her mother ( my friend). the daughter is 21 years old. She stopped eating in her stubbornness for almost a week. She took a shower during this time and noticed some red mild rash between her chest. After 4 days the rash got worse and is itching her. Keep in mind she ate only chocolates and junk stashed in her room while she was mad at her mother. She started to eat regular meals now but she has this rash now. Could it from not eating healthy and some kind of heat coming out in the form of a rash? It is itchy now, a little bumpy.