TLDR  A specific drug can help treat Lichen Planopilaris, a condition causing permanent hair loss.   
  Lichen planopilaris (LPP), a type of primary cicatricial alopecia, caused permanent hair loss and was characterized by symptoms such as itching, burning, and pain of the scalp, along with patchy alopecia or diffuse thinning and perifollicular erythema and scale. Traditional treatments involved anti-inflammatory medications, which could alleviate symptoms but often did not halt the progression of hair loss.
            98 citations
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  May 2008   in “British Journal of Dermatology”
           98 citations
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  May 2008   in “British Journal of Dermatology”    There are many treatments for permanent hair loss disorders, but their effectiveness varies and there's no clear best option.  
      102 citations
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  July 2007   in “Genes & Development”
           102 citations
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  July 2007   in “Genes & Development”    A mother's PPARγ is crucial for preventing harmful milk that can cause inflammation and growth problems in babies.  
               46 citations
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  March 2006   in “Seminars in Cutaneous Medicine and Surgery”    Current treatments for cicatricial alopecia can manage symptoms but don't stop hair loss or the disease.  
    
  
        
      1 citations
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  August 2022   in “JAAD case reports”
           1 citations
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  August 2022   in “JAAD case reports”    Tofacitinib and oral minoxidil may help treat Sisaipho alopecia areata.  
      5 citations
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  January 2020   in “Journal of Dermatology”
           5 citations
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  January 2020   in “Journal of Dermatology”    Temporal hair loss relates to overall scalp hair loss in women.  
      41 citations
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  December 2008   in “International Journal of Dermatology”
           41 citations
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  December 2008   in “International Journal of Dermatology”    South Korean women with hair loss have lower hair density and thickness compared to healthy women.  
      5 citations
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  October 1988   in “Clinics in Dermatology”
           5 citations
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  October 1988   in “Clinics in Dermatology”    Minoxidil promotes hair growth but exact mechanism is unknown.