Dozens of doctors and therapists said chatbots had led their patients to psychosis, isolation and unhealthy habits.

Patients newly diagnosed with PAH are often undertreated relative to treatment recommendations outlined in current guidelines.

Nirmatrelvir-ritonavir may lower risk of intubation or in-hospital mortality in patients with severe COVID-19.

Changing the mechanism of action may offer more durable disease control for patients with PsA who do not respond to an initial TNF inhibitor.