This study found that liquid nitrogen cryotherapy resulted in good responses in 33% of patients with recalcitrant alopecia areata, although nearly 30% showed no response.
This review reported that despite identifying over 200 symptoms associated with long COVID, significant gaps and controversies remain in understanding its diagnosis, pathophysiology, risk factors, and the impact of viral strains and vaccination.
This literature review found that Long COVID is a complex condition involving multiple body systems, influenced by factors like pre-existing conditions and vaccination status, with differing manifestations and persistence, complicating diagnosis and treatment efforts.