Statute tolled by personal disability

Unless otherwise provided in this section, if a person entitled to bring an action mentioned in this chapter, except for a penalty or forfeiture, or against a sheriff or other officer, for an escape, be at the time the cause of action accrued either under the age of eighteen years, or incompetent or disabled to such a degree that he or she cannot understand the nature of the proceedings, such incompetency or disability as determined according to chapter 11.130 RCW, or imprisoned on a criminal charge prior to sentencing, the time of such disability shall not be a part of the time limited for the commencement of action.