Post-concussion syndrome
About 10% of people with PCS develop sensitivity to light or noise, about 5% experience a decreased sense of taste or smell, and about 14% report blurred vision. People may also have double vision or ringing in the ears, also called tinnitus. PCS may cause insomnia, fatigue, or other problems with sleep.
Post-concussion syndrome
The International Statistical Classification of Diseases and Related Health Problems (ICD-10) and the American Psychiatric Association's "Diagnostic and Statistical Manual of Mental Disorders" have set out criteria for post-concussion syndrome (PCS) and post-concussional disorder (PCD), respectively.