Table 1.

Summary of demographic information and COVID-19 characteristics

Publication	Country	Age	Sex	Medical history	COVID-19 symptoms	Mechanical ventilation	CSF SARS-CoV-2 RT-PCR
Cases with myoclonus and ataxia
Chan et al. (case report)	Canada	44	M	None	Fever, myalgia, cough, fatigue, hyposmia, hypogeusia	No	Negative
Anand et al. [9]	USA	71	M	Not reported	Confusion and gait disturbance at presentation	No	N/A
Chaumont et al. [10]	France	62	M	Hypertension, diabetes mellitus	Fever, cough, ageusea, dyspnea	Yes	Negative
Chaumont et al. [10]	France	72	M	Hypertension, diabetes mellitus, obesity, urothelial carcinoma in remission	Fever, cough, dyspnea	Yes	Negative
Chaumont et al. [10]	France	50	M	Diabetes mellitus	Cough, dyspnea	Yes	Negative
Chaumont et al. [10]	France	66	M	Obstructive sleep apnea	Cough, dyspnea, anosmia, diarrhea	Yes	Negative
Delorme et al. [11]	France	72	M	Not reported	Fever, cough, anosmia	No	Negative
Dijkstra et al. [12]	Belgium	44	M	None	Fever, mild respiratory complaints, anosmia	No	Negative
Grimaldi et al. [13]	France	72	M	Previous transient global amnesia	Arthralgia, sore throat, fever	No	Negative
Sanguinetti and Ramdhani [14]	USA	57	M	Type 2 diabetes mellitus, hypertension, dyslipidemia	Nausea, fever, diarrhea, myalgia	No	N/A
Schellekens et al. [15]	Netherlands	48	M	Asymptomatic HIV	Fever, headache, cough, fatigue	No	Negative
Shah and Desai [16]	India	Middle-aged	M	Not reported	COVID-19 lung infection, details not reported	No	N/A
Cases with myoclonus, without ataxia
Anand et al. [9]	USA	47	M	Not reported	Headache, odynophagia, cough, fever	Yes	N/A
Anand et al. [9]	USA	28	M	Not reported	Fever, dyspnea, odnynophagia, chest pain, nausea, vomiting, abdominal pain	Yes	N/A
Anand et al. [9]	USA	73	M	Not reported	Cough, generalized weakness	Yes	N/A
Anand et al. [9]	USA	64	M	Not reported	Cough, dyspnea, fever	Yes	N/A
Anand et al. [9]	USA	66	M	Not reported	Cough, dyspnea, fever	Yes	N/A
Anand et al. [9]	USA	72	M	Not reported	Nausea, vomiting, cough	Yes	N/A
Anand et al. [9]	USA	62	M	Not reported	Cough, dyspnea, fever	Yes	N/A
Borroni et al. [17]	Italy	54	F	Hypertension	Fever, cough, dyspnea	No	N/A
Borroni et al. [17]	Italy	80	M	None	Dyspnea, fever, cough	No	Negative
Cuhna et al. [18]	France	67	M	Hypertension, poliomyelitis	ICU admission, no further details	Yes	N/A
Cuhna et al. [18]	France	66	F	Hypertension, nephroangiosclerosis, severe renal insufficiency stage V, hepatitis B healed	ICU admission, no further details	Yes	N/A
Khoo et al. [19]	United Kingdom	65	F	Alzheimer’s disease, osteoarthritis, gastroesophageal reflux disease	Cough, fever, myalgia, diarrhea	No	Negative
Méndez-Guerro et al. [20]	Spain	58	M	Hypertension, dyslipidemia	Cough, fever, nausea, shortness of breath	Yes	N/A
Muccioli et al. [21]	Italy	58	M	Hypertension	Fever, cough, dyspnea	Yes	Negative
Rábano-Suárez et al. [22]	Spain	63	M	Generalized anxiety disorder	Fever, anosmia, shortness of breath	Yes (for management of myoclonus)	N/A
Rábano-Suárez et al. [22]	Spain	88	F	Hypertension, hypothyroidism, non-functioning pituitary adenoma, mild cognitive decline	Anosmia, fever, shortness of breath	No	N/A
Rábano-Suárez et al. [22]	Spain	76	M	None	Fever, malaise, cough, anosmia, ageusia, myalgia	No	N/A
Ros-Castelló et al. [23]	Spain	72	F	Hypertension, asthma	Fever, shortness of breath	Yes	N/A
Cases with ataxia, without myoclonus
Ashraf and Sajed [24]	USA	26	F	Obesity, post-traumatic stress disorder, depression, asthma	None	No	N/A
Balestrino et al. [25]	Italy	73	M	Hypertension, type 2 diabetes mellitus	Asthenia, gait ataxia, confusion, drowsiness at onset Urinary incontinence, fever, dyspnea	No	N/A
Delorme et al. [11]	France	60	F	Temporal lobe epilepsy (hippocampal sclerosis)	Fever, cough, diarrhea	No	Negative
Diezma-Martín et al. [26]	Spain	70	M	Chronic obstructive pulmonary disease	Fever	No	Negative
Fadakar et al. [27]	Iran	47	M	None	Fatigue, generalized body pain, cough	No	Positive
Fernández-Domínguez et al. [28]	Spain	74	F	Hypertension, follicular lymphoma	Respiratory symptoms, no further details	No	Negative
Gutiérrez-Ortiz et al. [29]	Spain	50	M	Asthma	Cough, malaise, headache, low back pain, fever, anosmia, ageusia	No	Negative
Hayashi et al. [30]	Japan	75	M	Alzheimer’s disease	Diarrhea, urinary incontinence, fever	No	N/A
Kopscik et al. [31]	USA	31	M	None	None	No	N/A
Lahiri and Ardila [32]	Unclear	72	M	Not reported	SARS-CoV-2 pneumonia, no further details	Not reported	N/A
Lantos et al. [33]	USA	36	M	Remote strabismus	Fever, chills, myalgia	No	N/A
Lowery et al. [34]	USA	45	M	Dyslipidemia, hypertension, Crohn’s disease	Sinus congestion, cough, chest tightness, dyspnea	Yes	N/A
Manganotti et al. [35]	Italy	49	F	Not reported	Fever, cough, dyspnea, hyposmia, ageusia	No	Negative
Manganotti et al. [36]	Italy	50	F	None	Fever, cough, dysgeusia	No	N/A
Perrin et al. [37]	France	64	M	End-stage renal disease, peritoneal dialysis, diabetes mellitus, hypertension, dyslipidemia, sleep apnea, smoking	Fever, dyspnea, cough, diarrhea, myalgia, headache	No	Negative
Perrin et al. [37]	France	53	F	None	Fever, dyspnea, headache	Yes	Negative
Perrin et al. [37]	France	51	M	None	Fever, dyspnea, anorexia	Yes	Negative
Perrin et al. [37]	France	67	M	Kidney transplantation recipient (C3 glomerulopathy)	Fever, dyspnea, cough, myalgia, headache, anosmia, dysgeusia	No	Negative
Povlow and Auerbach [38]	USA	30	M	None	Nausea, vomiting	No	N/A
Sartoretti et al. [39]	Switzerland	60	M	Hypertension, asthma	Cough, fever	No	N/A
Wright et al. [40]	New Zealand	79	M	Asbestosis, non-disabling stroke, mild cognitive impairment, type 2 diabetes mellitus, hypertension, prostatic hypertrophy	Diarrhea	No	N/A