- A specific location - such as the left face, right farm or even just a small area such as the tongue
- A specific function - for example, speech may be affected, but not the ability to write
In contrast, a non-focal problem is NOT specific - such as a general loss of consciousness.
References:
- MedLine Plus Medical Encyclopedia, http://www.nlm.nih.gov/medlineplus/ency/article/003191.htm
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