Symptom Information: Sort according to HPO 

1
(HPO:0000597) Ophthalmoparesis Occasional [Orphanet] 71 / 7739
2
(HPO:0002486) Myotonia Very frequent [Orphanet] 29 / 7739
3
(HPO:0003326) Myalgia Very frequent [Orphanet] 143 / 7739
4
(HPO:0000821) Hypothyroidism Occasional [Orphanet] 141 / 7739
5
(HPO:0001288) Gait disturbance Occasional [Orphanet] 318 / 7739
6
(HPO:0001276) Hypertonia Very frequent [Orphanet] 317 / 7739
7
(HPO:0002015) Dysphagia Occasional [Orphanet] 301 / 7739
8
(HPO:0003457) EMG abnormality Frequent [Orphanet] 78 / 7739
9
(HPO:0003712) Skeletal muscle hypertrophy Occasional [Orphanet] 42 / 7739
10
(HPO:0100749) Chest pain Frequent [Orphanet] 92 / 7739
11
(HPO:0003394) Muscle cramps Frequent [Orphanet] 106 / 7739
12
(HPO:0003552) Muscle stiffness 23 / 7739
13
(HPO:0010307) Stridor 19 / 7739
14
(OMIM) Apnea, episodic, neonatal 6 / 7739
15
(OMIM) Laryngospasm, neonatal 4 / 7739
16
(OMIM) Myotonia, potassium-sensitive (may be responsive to acetazolamide) 4 / 7739
17
(OMIM) Muscle weakness usually does not occur 4 / 7739
18
(OMIM) Cold sensitivity has been reported 4 / 7739
19
(OMIM) EMG in myotonia permanens shows continuous myotonic activity 4 / 7739
20
(OMIM) Serum creatine kinase may be increased 6 / 7739
21
(HPO:0030089) Abnormal muscle fiber protein expression Occasional [Orphanet] 64 / 7739