Other symptoms are feelings of guilt or worthlessness, poor concentration and inability to make simple decisions.

This condition can cause low energy and poor concentration.

This might cause a child to miss school or have poor concentration, eventually compromising school performance.

The symptoms include constriction in the chest, palpitations, anxiety and poor concentration.

He explained that his father had been suffering from poor concentration for two years.

Other possible side effects include drowsiness, poor concentration, and irritability.

Side effects may include nervousness, poor concentration, nausea, and vomiting.

This error results from the very poor fit to the venous concentration at times preceding the first data point at 10 minutes.

Missing breakfast starves the brain and leads to poor concentration.

Symptoms include feeling tired or breathless, experiencing poor concentration and looking extremely pale.