Symptoms vary with each child. Early symptoms of Batten disease are confusing and not easily recognised even by medical personnel. The following is an outline of the most typical symptomatology:
- Visual impairment often progressing to complete blindness;
- Seizures, which may be frequent and difficult to control;
- Decline in cognitive function;
- Personality and behavioural changes;
- Loss of communication skills;
- Loss of fine and gross motor skills;
- Abnormal body movements;
- A general progressive deterioration.
Other symptoms that may develop include:- slowing of head growth with age in the infantile form, poor circulation in lower extremities with legs and feet cold as well as bluish-red in colour, decreased body fat and muscle mass, curvature of the spine, hyperventilation and/or breath-holding spells, difficulty in swallowing and feeding, teeth grinding and constipation.