Reversal of Stress-Associated Alopecia.

Novel coronavirus SARS-CoV-2, designated as COVID-19 by the World Health Organization (WHO) on February 11, 2020, is one of the highly pathogenic β-coronaviruses that infects humans.1 Alopecia areata (AA) is a chronic inflammatory disease with sudden hair loss.2,3 There is strong evidence that AA is a tissue-specific autoimmune disease that develops based on genetic predisposition.4 In several patients, acute or chronic psycho-emotional stress may be causing the initiation and/or progress of AA.5 It is suggested that psychological stress can trigger or exacerbate inflammatory skin diseases through the neuroendocrine system, which is an essential connection between the brain and the skin.6,7 Hair loss has emerged as a frequently noted side effect of infection with COVID-19, and has been observed in many patients who have recovered from a documented COVID-19 illness.8,9.

Shining Light on PDT and Actinic Keratosis.

Photodynamic therapy (PDT) is a non-invasive treatment modality involving photosensitizers that are activated by absorption of visible light to initially form the excited singlet state, followed by transition to the long-lived excited triplet state.

Retrospective Study of Covid Related Hair Loss.

The Novel Coronavirus disease (COVID-19) is caused by severe acute respiratory syndrome coronavirus two and primarily affects the epithelium of the airways. Multiple cutaneous manifestations of COVID-19 have been reported in the literature. Case reports citing many different types of exanthems and enanthems have been reported to correspond with the initial presentation and diagnosis of COVID-19. Some researchers have even described cutaneous symptoms linked to COVID-19 as an important presenting sign of the infection with COVID-19 in otherwise asymptomatic or minimally symptomatic patients. Hair loss has emerged as a frequently noted side effect of infection with COVID-19 and has been observed in many patients who have recovered from a documented COVID-19 illness. Given the prevalence of the onset of hair loss in patients who have overcome COVID-19, we designed this retrospective study in order to evaluate the prevalence of hair loss, along with histological findings if hair loss was present and response to treatment in 100 patients who presented to our outpatient dermatology clinic for various dermatological conditions and reported a history of having recovered from COVID-19. J Drugs Dermatol. 2022;21(7):724-727. doi:10.36849/JDD.6661.