What are the early symptoms?

The early symptoms of Wilson disease vary so much from person to person that there is no single “typical” presentation. Roughly speaking, presentations cluster into three groups, and many patients have features of more than one.¹²

Liver-first

The most common first sign in children and adolescents is liver involvement:¹²

• elevated liver enzymes (ALT, AST) found incidentally on a routine blood test, with no other obvious cause
• fatigue, especially after meals
• mild jaundice (yellowing of the eyes or skin)
• a slightly enlarged liver or spleen on examination
• in advanced cases, signs of cirrhosis — fluid in the abdomen, easy bruising, varices

Liver disease tends to appear earlier, often in the first decade of life, while neurological symptoms more often emerge in late adolescence or young adulthood — though there is substantial overlap, and neither rule is absolute.²

Neurological-first

In older adolescents and young adults, the first signs are often neurological:¹²

• a fine tremor in one or both hands, often noticed when writing or holding a cup
• slurred speech (dysarthria) or change in handwriting
• difficulty with fine motor tasks (buttoning a shirt, using chopsticks)
• stiffness or rigidity, sometimes mistaken for early Parkinson’s disease
• drooling or excess saliva
• problems with balance and coordination

Psychiatric-first

A meaningful minority of patients first come to attention with psychiatric or cognitive change:¹³

• mood changes, depression, anxiety
• irritability or personality change noticed by family
• difficulty concentrating or a drop in school or work performance
• in some cases, frank psychosis

Because these symptoms are common and have many other causes, the average patient with a psychiatric-first presentation can wait years before anyone considers Wilson disease. Research suggests that psychiatric features are present in a substantial proportion of patients with neurological Wilson disease at the time of diagnosis, and can precede the more recognizable motor signs.³

Other early signs

A few additional presentations are worth knowing about:

• Kayser-Fleischer rings — a brownish-gold ring around the iris of the eye, visible on a slit-lamp exam. These are found in nearly all patients who have neurological symptoms, but in only around half of those who present with liver disease alone.¹⁴ They are not painful and do not affect vision; most people are unaware of them until an eye specialist looks.
• Hemolytic anemia — a sudden drop in red blood cells caused by copper released from a damaged liver into the bloodstream. This can occasionally be the very first sign of Wilson disease, and it sometimes triggers the diagnosis in a patient who seemed otherwise well.⁵
• Menstrual irregularity, recurrent miscarriage, or unexplained infertility in young women. These reproductive effects reflect the systemic impact of untreated copper accumulation. A large European study found that many women with Wilson disease had menstrual abnormalities or pregnancy losses before the correct diagnosis was made, and that effective treatment usually restored normal reproductive function.⁶
• Renal abnormalities — protein in the urine, or kidney stones — reflecting copper deposits in the kidney tubules. These are less common as a presenting complaint but are found more often on systematic testing.¹

Who should be tested?

Wilson disease almost always presents before age 40, though rare cases have been described in older adults.¹⁷ If any of the signs above are unexplained and persist — especially in someone under 40 with no other clear diagnosis — Wilson disease should be on the list of possibilities, and the screening tests (serum ceruloplasmin, 24-hour urine copper, slit-lamp exam) should be ordered. The tests are inexpensive and widely available; the cost of missing the diagnosis is not.

This page is for general education only and is not a substitute for advice from your own physician. If you are concerned about your symptoms, please contact a healthcare professional.

References