Historical Examples. 1  What between the blow of the cougar and the force of the fall, the big-horn was dead. 2  Two Arrows wiped the blood of the cougar from the blade of his lance. 3  But now the hounds were too quick, and in a trice they had the cougar surrounded. 4  No cougar stalking its prey could have been more lithely wary.
SeveralPossibilities: Most cases of a twitching lip may be due to stress, fatigue, emotion, excessive caffeine intake or some deficiency in the diet such as potassium. Lip twitching in most cases is self-limiting, disappearing in minutes or maybe in a few days without any residual problems.
Some of the possible common medical causes of Involuntary twitches in the hands may include: 1  Excessive caffeine intake or other caffeinated drink. 2  Excessive alcohol consumption, alcoholism, or alcohol withdrawal. 3  Stress. 4  Anxiety. 5  Fatigue. 6  Benign essential tremor. 7  Thyrotoxicosis. 8  Carbon dioxide narcosis.