GBS often starts with muscle weakness (loss of muscle strength) in the legs. In addition, other complaints often occur, such as pain in the back, pain in the legs or sensory disorders such as tingling, a feeling of sleep or no feeling in the arms or legs.
The muscle weakness slowly gets worse, sometimes even the respiratory muscles can (partially) stop working. Respiratory support is then required. Symptoms are usually at their worst after 4 weeks. Thereafter, spontaneous improvement takes place slowly. Recovery can take months to years.