Excruciating pain. Aching body and unknown rash

Hey, Girlfriend just went to hospital after complaining about excruciating pain in both arms, as i am unable to get to her due to everybody at my house being out and the fact it would take 5 hours via public transport has stopped me from going with her.

A few days ago she was experiencing sever pain in her upper abdominal region near her sternum and lower ribs. She went to the doctors the next day and was diagnosed with a fever of some sort and was told that due to her diet deficiency it had made the impact alot worse on her body. The day following this, she was complaining about her body being sore all over, especially her upper body and neck/shoulders.

But now she has a rash, and the pain is so bad she was bawling her eyes out and compelled to go to hospital. it must have been bad as she was reluctant to go to a docter let alone an ER.

she also had swollen feet last night and assumed this was from mosquito bites, not sure if relevent but still.
Any suggestions or hunchs would be good.
im worried sick =\.