123 citations
,
  February 2002   in “Journal of The American Academy of Dermatology”    Minoxidil can cause skin allergy; use alternative solvents or treatments if allergic.  
     
           38 citations
,
  June 2005   in “Contact Dermatitis”    Patient had scalp allergy from minoxidil; test helped identify cause and suggest alternative treatments.  
               36 citations
,
  March 1989   in “British journal of dermatology/British journal of dermatology, Supplement”    DPCP is more effective than tretinoin gel for treating severe alopecia.  
     
           32 citations
,
  May 1995   in “Contact Dermatitis”    Minoxidil can cause allergic reactions, but testing helps identify the cause.  
     
           29 citations
,
  August 1985   in “Contact Dermatitis”    Minoxidil can cause allergic reactions like burning, itching, and red bumps.