Halsey has been diagnosed with multiple syndromes, after spending the last few months "in and out" of hospital.
The singer, 27, - who uses both 'she' and 'they' pronouns - opened up about their ailments in a series of videos on Instagram yesterday, in which they addressed concerns.
Halsey, real name is Ashley Frangipane, said their health has deteriorated since having their nine-month-old child Ender, who was born in July last year.