Correct monitor height is the screen position where the top edge sits at or just below your eye level, so your gaze lands on the upper-middle of the screen without tilting your head up or down.
Kyphosis is the medical term for an excessive forward curve in the thoracic spine. Dowager's hump and neck hump are two informal names for a related but more specific symptom.
Kyphosis is a musculoskeletal condition in which the upper spine curves forward beyond the normal range, creating a rounded or hunched appearance in the upper back.
A posture headache is muscle and joint-driven pain from neck strain, while a migraine is a neurological condition involving specific brain and nerve pathway changes, and the two respond to completely different things.
