Signs of a stroke must be dealt with immediately. Even if they turn out to be harmless, it's better for the patient to be safe than sorry. Stroke signs include inability to speak or move a party of the body, loss of consciousness, a sudden numbness or heaviness in a limb, the inability to control muscles, headache, disturbance in vision, confusion and dizziness. Loss of bowel of bladder control can also be a sign of a stroke.