Berklee Online recommends the following scores: 1  PTE Academic: 68. 2  TOEFL: iBT (internet-based): 100; Computer-based: 250; Paper-based: 600. 3  IELTS: 7.5 or higher.
1 Allergy can certainly cause foggy brain. 2  Wheat is a common cause of brain fog. 3  Many religious groups will fast for several days in order to âclear the brainâ. 4  Food allergy usually causes more than one symptom â often several.
Misalignment of the spine can cause headaches and backaches. These can be hereditary or caused by trauma such as an accident. When the cranial or cervical nerves are pinched or out of alignment, this may not only cause pain, but it can also contribute to brain fog.