Table 1. Patients' demographics.

Gender	Age	Type of cramp	Duration (years)	Botulinum toxin/ last injection
M	54	MC	5	Yes / 3 months
F	57	WC	23	No
M	62	WC	11	Yes / 18 months
M	61	WC	15	No
M	57	MC	4	Yes / 4 years
F	54	WC	11	No
F	63	WC	2	No
M	59	MC	7	Yes / 6 months
M	60	WC	19	Yes / 4 months
M	57	WC	16	Yes / 3 years
M	58	MC	14	Yes / 2 years
M	58	MC	8	No
M	56	WC	9	Yes/ 3 months
F	48	WC	5	No
M	75	WC	18	Yes / 2 years
M	47	MC	16	Yes / 3 months
M	51	WC	15	Yes/ 6 months
M	65	WC	41	No

MC: Musician cramp, WC: writer cramp.