COVID-19 can cause hair loss and nail issues, with treatments available for these conditions.
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September 2025 in “Viruses” Thrombophilic conditions may worsen Long COVID symptoms due to increased blood clotting.
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April 2014 in “The Journal of Steroid Biochemistry and Molecular Biology” Finasteride affects brain and blood steroids, causing lasting sexual and emotional side effects.
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December 2022 in “Journal of Infection” The ACE1 gene variant doesn't affect long-COVID symptoms.