Actinic Lichen Nitidus

AKA Summertime Actinic Lichenoid Eruption (old) or lichen nitidus actinicus
 
Epidemiology
  • Phototype IV and V
  • Summer
 
Clinical presentation
  • Pinhead sized lichenoid papules (~lichen nitidus in clinical presentation and histology)
  • In sun exposed areas
 
≠ actinic lichen planus
  • annular lesions with classic histopathology features of LP
 
DDx
  • Micropapular polymorphous light eruption
 
Treatment
  • Hydroxychloroquine