UK-NDM-2202-00014 June 2022
UK-NDM-2202-00014 June 2022
Avocado
Apricots
Bananas
Dried fruits eg dates, raisins and prunes
Grapefruit
Kiwi
Mango
Melons
Nectarines
Oranges and orange juice
Papaya
Pomegranate and pomegranate juice
Artichoke
Beetroot
Brussel sprouts
Broccoli (cooked)
Okra
Parsnip
Potatoes (processed or with skin on)
Cooked spinach
Tomato (concentrated, eg. Tomato puree)
Baked beans
Kidney beans
Lentils
Bran cereal
Dairy (eg yoghurt, milk)†
Nuts
Brown rice
Salt substitutes
Wholewheat bread and pasta
(also called Thomsen myotonia or autosomal dominant myotonia congenita)
(also called Becker myotonia, Becker disease, generalized myotonia, recessive generalized myotonia or autosomal recessive myotonia congenita
(Also called Eulenburg disease, paralysis periodica paramyotonia, paramyotonia congenita of von Eulenburg, PMC or von Eulenburg’s disease)
myotonia permanens and myotonia fluctuans, acetazolamide-responsive myotonia (ARM) previously known as Potassium aggravated myotonias (PAM)
(including hyperkalemic paralysis or hyperPP)
Lower limbs tend to be more affected, although can also affect the arms, hands and face. Stiffness may be worse when you first try to move after a period of inactivity, and may ease as you ‘warm up’.
Lower limbs tend to be more affected, although can also affect the arms, hands and face. Stiffness may be worse when you first try to move after a period of inactivity, or if you are startled, and may ease as you ‘warm up’. Sometimes people with Becker myotonia congenita experience temporary weakness after an episode of myotonia.
Myotonia mainly affects hands and face and gets worse with exercise. Cold is also a key trigger of myotonia, and muscle weakness after an episode of myotonia may last hours or sometimes days.
Potassium-aggravated myotonia is a rare form of NDM that affects all areas of the body. Myotonia attacks are triggered by eating potassium-rich foods. Symptoms may fluctuate widely from day to day (myotonia fluctuans) or are constant and severe (myotonia permanens).
Myotonia is usually mild, and often involves the eyelids, hands, and tongue. Attacks of weakness can occur at any time and are commonly triggered by rest following exercise, fasting, eating potassium-rich foods or stress.
Chloride (Cl-)
Chloride (Cl-)
Sodium (Na+)
Sodium (Na+)
Sodium (Na+)
Autosomal dominant
Autosomal recessive
Autosomal dominant
Autosomal dominant
Autosomal dominant