This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
A patient of Parkinsonism developed this condition after treatment. Which of the following drugs is likely to cause this adverse effect? 
Select and explain. 
A. Levo-dopa, B. Amantadine, C. Selegiline, D. Pramipexole
B: Amantadine
Answer: B: Amantadine 
Explanation: Ans. (B) AmantadineThe figure shows the livedo reticularis, a type of skin pigmentation in the form of mesh (reticular). It is characteristic adverse effect of amantadine