This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Low CSF protein may be seen in all of the following conditions, except: 
Select and explain. 
A. Recurrent Lumbar Puncture, B. Hypothyroidism, C. Pseudotumor cerebri, D. Infants
B: Hypothyroidism
Answer: B: Hypothyroidism 
Explanation: Hypothyroidism is associated with increased protein concentration sometimes >100. Ref: Infections of the Central Nervous System By W. Michael Scheld, Richard J. Whitley, Christina M. Marra, Page 16; Essential Neuroscience By Allan Siegel, Hreday N. Sapru, Page 41; Critical Care Nursing Practice Guide : A Road Map for Students and New Graduates By Elizabeth Simon, Page 96, 97; Clinical Adult Neurology By Jody Corey-Bloom, Page 420.