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Glossary COVID-19 vaccine

medical intervention to provide immunity against the coronavirus

The COVID-19 vaccine, also known as the coronavirus vaccine or SARS-CoV-2 vaccine, is a medical intervention designed to provide immunity against the virus responsible for COVID-19. These vaccines work by stimulating the body's immune system to recognize and fight the virus, typically using mRNA technology, viral vectors, or inactivated virus particles. They have been crucial in reducing the spread of the virus and the severity of the disease.

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research Telogen effluvium after COVID-19 vaccination among public in Saudi Arabia

4 citations , October 2022 in “Journal of family medicine and primary care”

This study observed a high prevalence of hair loss among adults after receiving COVID-19 vaccination, with two-thirds of participants experiencing this issue and a minority of cases possibly vaccine-related.

research Development of Pilomatrixoma at the Vaccination Site: A Rare Complication of COVID-19 Vaccination – A Case Report

2 citations , October 2023 in “The American journal of case reports”

This report observed a case of pilomatrixoma appearing at the COVID-19 vaccination site of a 65-year-old man, aligning with previous findings that suggest a potential association between vaccination sites and this benign tumor.

research COVID-19 vaccination related exacerbations of hair loss in patients with moderate-to-severe alopecia areata on systemic therapy

2 citations , August 2022 in “JAAD case reports”

This review discusses vaccine safety concerns for individuals with autoimmune and inflammatory conditions, noting vaccine hesitancy due to observed exacerbations post-vaccination and a lack of comprehensive trial data.

research Patient-Reported Flare Symptoms Following COVID-19 Vaccination in Systemic Lupus Erythematosus

June 2026 in “Cureus”

In this study, patient-reported flare symptoms after COVID-19 vaccination in individuals with systemic lupus erythematosus were generally mild, with 17% experiencing flares mostly characterized by joint pain and fatigue; vaccine type did not affect flare incidence.

research Stem cell therapy alleviates hair loss caused by COVID-19 vaccination

April 2026 in “Journal of Exercise Rehabilitation”

This report describes a case where a woman's hair loss following COVID-19 vaccination improved after treatment with autologous CD34+ hematopoietic progenitor cells and umbilical cord blood-derived mesenchymal stem cells, with no significant adverse effects observed over the 12-week treatment period.

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community Hair loss after COVID or vaccination isn’t “made up” but it’s also not what TikTok makes it sound like

2 upvotes 8 months ago

COVID and COVID vaccination can trigger hair loss, primarily telogen effluvium, due to stress and immune system activation. Proper diagnosis and addressing factors like nutrition and stress are crucial for recovery.

community Why is Finasteride seen as “scary” for men, but hormonal birth control is totally normalized for women?

in Finasteride/Dutasteride 757 upvotes 1 year ago

Finasteride is seen as risky for men due to side effects like erectile dysfunction, while hormonal birth control for women is normalized despite its side effects. The discussion points out a double standard influenced by societal and gender norms.

community Is this Minoxidil good? France

in Product 6 upvotes 4 months ago

A 19-year-old in France is experiencing hair loss after COVID-19 and is using Minoxidil, considering Finasteride but facing challenges in obtaining it. Users discuss Minoxidil's effectiveness, potential issues like crystallization, and alternative products like Foligain.

community 6 months of treatment and sudden shedding

in Progress Pictures 9 upvotes 1 year ago

A 28-year-old male experienced hair loss after COVID-19 and used Minoxidil with initial success, but later faced shedding again. He started Finasteride in February 2025, noticing improvements, but recent shedding has caused concern; his regimen includes Minoxidil, microneedling, ketoconazole shampoo, red light therapy, supplements, and a healthy lifestyle.

community Been on Finasteride since last year. My hair is starting to thin, fall out again for the last 2-3 weeks.

10 upvotes 5 years ago

The user's hair thinning and shedding were due to Telogen effluvium caused by COVID-19, not the ineffectiveness of Finasteride. The shedding eventually slowed, and hair growth resumed, but the user was advised to consider additional treatments like Minoxidil or microneedling if needed.

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