He had transient and crescendo neurologic events in the first 3 postoperative weeks that culminated in right hand weakness and paresthesia, despite dual antiplatelet therapy, maximal anticoagulation, and undergoing stenting of the endarterectomy site. [ncbi.nlm.nih.gov]

This is especially true if any weakness, loss of sensation or balance, change in vision, or change in level of consciousness occurs. [azmedmj.org]

Other symptoms may include: Seizures Changes in vision Difficulty understanding others when they are speaking Difficulty speaking Weakness on one side of the body RCVS patients are at risk of experiencing a stroke or transient ischemic attack (TIA). [cedars-sinai.edu]

A 7-year-old girl had a mild acute headache with nausea after swimming. She subsequently developed hemi-convulsions followed by right hemiplegia. [ncbi.nlm.nih.gov]

Nausea and vomiting were reported at the onset of headache in seven patients. [ceemjournal.org]

Waxing‐waning headaches persisted, accompanied by nausea, vomiting, dizziness, photophobia, and visual scotomas. Her admission neurological examination and head CT were normal. [shmabstracts.com]

The headaches may be accompanied by nausea, vomiting and photophobia. Most headaches are bilateral and involve the occipital region. [medsafe.govt.nz]

The variable nature of the headache and the degree of associated hypertension raised the clinical suspicion of reversible cerebral vasoconstriction syndrome, confirmed on MR angiography. [ncbi.nlm.nih.gov]

Results: We report a case of RCVS-related ICH leading to refractory intracranial hypertension. A decompressive craniectomy was performed to control intracranial pressure. We discuss here the management of RCVS with intracranial hypertension. [karger.com]

Waxing‐waning headaches persisted, accompanied by nausea, vomiting, dizziness, photophobia, and visual scotomas. Her admission neurological examination and head CT were normal. [shmabstracts.com]

The headaches may be accompanied by nausea, vomiting and photophobia. Most headaches are bilateral and involve the occipital region. [medsafe.govt.nz]

The onset is usually recurrent sudden-onset and severe headaches that are often accompanied by nausea, vomiting, photophobia, confusion and blurred vision [ 7, 28 ]. [ncbi.nlm.nih.gov]

[…] over 95% of patients experience.[1] In two-thirds of cases, it is the only symptom.[1] These headaches are typically bilateral, very severe and peak in intensity within a minute.[1] They may last from minutes to days, and may be accompanied by nausea, photophobia [en.wikipedia.org]

[…] are “secondary” 6 Clinical Presentation Headache (secondary) - “thunderclap variety”, peaks within one minute and very intense Only symptom in 75% Multiple over 1-4 week period is almost pathognomonic Usually posterior and bilateral Nausea/vomiting, photophobia [slideplayer.com]

However, our case suggests that diffuse cerebral vasodilatation may in fact be evident during the early stage of disease. [ncbi.nlm.nih.gov]

Thunderclap headache is the usual primary symptom; seizure is uncommon. During the postpartum period, seizure is a significant concern. [ncbi.nlm.nih.gov]

Case Report: We present 49-year-old and 46-year-old females with thunderclap headache and seizure. MRI shows reversible cortical and subcortical lesions in both fronto-parieto-occipital lobes. [e-jnc.org]

Moreover, a subset of patients with severe RCVS presents without any headache, but frequently with seizures, focal neurological deficits, confusion or coma, in the setting of stroke or posterior reversible encephalopathy syndrome. [ncbi.nlm.nih.gov]

Headache may be associated with agitation, confusion, nausea, vomiting, phonophobia, photophobia and sometimes collapse. [em-consulte.com]

[…] vasoconstriction syndromes (RCVS), a diverse group of conditions characterized by reversible vasoconstriction and sudden thunderclap headache with or without associated neurologic deficits, have been poorly differentiated in the literature and are frequently confused [mdedge.com]

We report a 45-year-old woman with severe sudden onset frontal headache who was identified with reversible cerebral vasoconstriction syndrome. [happycampus.com]

[…] period of one to four weeks.[1] A milder, residual headache persists between severe attacks for half of patients.[1] 1–17% of patients experience seizures. 8–43% of patients show neurologic problems, especially visual disturbances, but also hemiplegia, ataxia [en.wikipedia.org]

Through the course of hospitalization, both patients developed rigidity, diaphoresis, fever, tachycardia with labile blood pressures and clonus on examination. [ncbi.nlm.nih.gov]