Different helping verbs are used for different purposes in sentences. One of their main functions is to situate the action of a sentence in a particular aspect of time. The two main aspects that helping verbs play a role in are the progressive aspect and the perfect aspect.
Baastrup syndrome is characterized as the of abnormal contact or rubbing between adjacent spinous processes. 0 Baastrup Syndrome patients report severe fatigue (0%). 2  1 Baastrup Syndrome patients report moderate fatigue (100%). 3  0 Baastrup Syndrome patients report mild fatigue (0%). 4  0 Baastrup Syndrome patients report no fatigue (0%).
Buerger's disease (thromboangiitis obliterans) is a rare disease of the arteries and veins in the arms and legs. In Buerger's disease, your blood vessels become inflamed, swell and can become blocked with blood clots (thrombi). This eventually damages or destroys skin tissues and may lead to infection and gangrene.