Frontal lobe syndrome

New lability, disinhibition, apathy, especially later in life

UrgentReview due

At a glance

Rapid decline, seizure, focal neurology, tumour, delirium.

Watch forRapid declineseizurefocal neurologytumour

Shifts are reactive, brief, and relationship-linked rather than sustained episodic elevation with reduced need for sleep.

Separates the Mood Lability / Emotional Dysregulation group. It is not specific to Frontal lobe syndrome.

Rows marked “Whole group”: Applies to the Mood Lability / Emotional Dysregulation group — not specific to Frontal lobe syndrome

New lability, disinhibition, apathy, especially later in life

Key features

Rapid decline, seizure, focal neurology, tumour, delirium.

High-risk causes5 causes

Applies to the Mood Lability / Emotional Dysregulation group.

Shifts are reactive, brief, and relationship-linked rather than sustained episodic elevation with reduced need for sleep.

Helpful clues

Applies to the Mood Lability / Emotional Dysregulation group.

None listed

Priority steps

Applies to the Mood Lability / Emotional Dysregulation group.

None listed

Core tests

Applies to the Mood Lability / Emotional Dysregulation group.

None listed

Consider

Clinical reference — not validated decision support. Review before use.