The chemical I am concerned about causes short term memory loss, and that is a stand out harm.  I think it is part of the autoimmune Central Nervous System Issues. 

Central Nervous System Effects:
Difficulty Concentrating
Short Term Memory Loss
Difficulty Sleeping
Constantly Irritable - ANGER outbursts  -  Paranoia
Depression
Suicidal Tendencies

Mimics True Psychiatric Disorder with strong exposure (Military calls it PTSD?)

Horrible Headaches

and AUTOIMMUNE issues * such as lipid changes, autoimmune metabolic issues – weight issues – belly fat - balance issues (vertigo)  Severe eyesight loss; hearing loss*; brain tumors may start & grow rapidly; loss of taste, smell; periodontal disease

AND FATIGUE that hides out. (look for Autoimmune Hemolytic Anemia if 2-butoxyethanol exposure signs are there. AIHA or IMHA (Immune Mediated Hemolytic Anemia)

LOOK at red blood cells

• Chills (advanced anemia) 'shivering'    (chills?)  Chills?  Chills?
• Fatigue
• Pale color
• Shortness of breath
• Rapid heart rate * *
• Yellow skin color (jaundice)
• Dark urine (indicative of blood in urine - never dismiss this! Stop exposure immediately!)
• Red blood cells that are small-sized

&/or grossly misshapen red blood cells  *

(lose the capability to convey oxygen around the body)

• Enlarged spleen *
• Elevated RDW? 
• RBC 'sticking together?'
• Fragility of RBC membranes? 
• Elevated 'retic ratio' only at 2.5 days after 'flu' Compensated
• VERY HIGH White Blood Cell Counts (advanced anemia) *