This fact is from Lichen Planus & Lupus in Oral Medicine & Radiology. It is a commonly tested concept in NEET MDS examinations. Understanding this fact is crucial for answering MCQs correctly.
Wickham striae = white lacy lines = Lichen planus pathognomonic
Erosive LP = most symptomatic painful
Butterfly rash = malar rash = SLE pathognomonic
Band of IgG at BMZ = Lupus band test
Lichenoid drug reaction mimics LP = gold NSAIDs ACE inhibitors.