Halsey gives health updates as she undergoes chemotherapy amid health battle

Halsey gives health updates as she undergoes chemotherapy amid health battle. Halsey informed her fans of the most recent health updates as she undergoes chemotherapy after she was diagnosed with Ehlers-Danlos syndrome, Sjogre's syndrome, mast cell activation syndrome - known as MCAS - and postural orthostatic tachycardia syndrome, known as POTS.