Depends on location
Posterior Fossa
Headache
Early morning (sleep > hypoventilation > hypercarbia > increases CNS blood flow > increased ICP)
Red flags also include headaches that are worse with valsalva, wakes from sleep, occur daily
Effortless vomiting
Cranial nerve palsies (especially 6th nerve)
Brainstem
Cranial nerve palsies (facial weakness, abducens palsy, dysphagia), ataxia
Supratentorial
Headache, personality change, motor weakness, seizure
Sellar
Visual changes, hypothalamic dysfunction (diabetes insipidus, stunted growth, hypothyroidism)
Increased ICP features
Features of elevated ICP (from cerebral edema,<unk>  bleed, or mass effect
Headache (from increased pressure on heavily innervated meninges)
Red flags: worse in the morning, worse with valsalva, wakes from sleep, daily
Nausea/vomiting
Also typically worse in the morning
Papilledema, dilated optic nerve
Cushing's triad: Bradycardia, hypertension, irregular respirations
Bulging fontanelle in infants
Seizure
Altered mental status, irritability, coma
Posterior Fossa
Headache
Early morning (sleep > hypoventilation > hypercarbia > increases CNS blood flow > increased ICP)
Red flags also include headaches that are worse with valsalva, wakes from sleep, occur daily
Effortless vomiting
Cranial nerve palsies (especially 6th nerve)
Brainstem
Cranial nerve palsies (facial weakness, abducens palsy, dysphagia), ataxia
Supratentorial
Headache, personality change, motor weakness, seizure
Sellar
Visual changes, hypothalamic dysfunction (diabetes insipidus, stunted growth, hypothyroidism)
Headache
Early morning (sleep > hypoventilation > hypercarbia > increases CNS blood flow > increased ICP)
Red flags also include headaches that are worse with valsalva, wakes from sleep, occur daily
Effortless vomiting
Cranial nerve palsies (especially 6th nerve)
Early morning (sleep > hypoventilation > hypercarbia > increases CNS blood flow > increased ICP)
Red flags also include headaches that are worse with valsalva, wakes from sleep, occur daily
Cranial nerve palsies (facial weakness, abducens palsy, dysphagia), ataxia
Headache, personality change, motor weakness, seizure
Visual changes, hypothalamic dysfunction (diabetes insipidus, stunted growth, hypothyroidism)
Headache (from increased pressure on heavily innervated meninges)
Red flags: worse in the morning, worse with valsalva, wakes from sleep, daily
Nausea/vomiting
Also typically worse in the morning
Papilledema, dilated optic nerve
Cushing's triad: Bradycardia, hypertension, irregular respirations
Bulging fontanelle in infants
Red flags: worse in the morning, worse with valsalva, wakes from sleep, daily
Also typically worse in the morning
Central nervous system tumor 
Primary headache
Spinal cord injury
Migraine
Multiple sclerosis
Tension
Ventriculoperitoneal shunt complications
Cluster