Although rare, the tension headache can be unilateral or one sided pain.
It is felt as a constant, tight, pressing pain, mild or moderate in severity, located in the frontal, temporal, occipital, or parietal area (with frontal and temporal regions most commonly affected).
Occasional dizziness, disturbed concentration and irritability, difficulty falling asleep and staying asleep, general muscle aches and fatigue, headache upon awakening or later in the morning, are some of the features of the tension headache.