Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Illness / Injury; Inflight Event / Encounter Other / Unknown
General Physical Injury / Incapacitation
Aircraft; Staffing; Environment - Non Weather Related
[I] worked 3 short legs on this [aircraft]. [Another Flight Attendant] and I were both extremely hot throughout the day. The APU was run on the ground on each leg; shades closed and air vents open as well. Our pilots made it as cold as possible. The [other Flight Attendant] was very ill; vomiting in the bathroom many times throughout the day from the high heat. Passengers were complaining throughout the day. I had a moderate headache and in the middle of the night began to run a high fever. I have chills; sweats; severe headache; tiredness; nausea; a rash; and fever. I spent majority of the night awake and sick. I was unable to complete my duty day the following day because of these symptoms and needed to be replaced. I worked an additional leg while feeling very ill in effort to not delay the flight or crew. I was treated in the hospital. I was diagnosed with heat exhaustion and dehydration and was given multiple bags of fluid to rehydrate. Today; I was seen for my follow up appointment with [company medical]. The Doctor was positive that I had not only been exposed to high heat conditions but to a toxic chemical/substance as well. He believes the high heat exacerbated this toxic exposure and is treating me accordingly for toxic exposure.
A Flight Attendant described feeling ill after several legs with the cabin temperature very hot and that other Flight Attendant was vomiting during the encounter.