The U.S. Food and Drug Administration on Wednesday warned about the risk of a rare but serious allergic reaction with the use of some multiple sclerosis drugs including Teva's Copaxone.

Symptoms may include a runny nose, watery eyes, or a rash ... and requires immediate medical care. Signs of anaphylaxis include skin flushing, swelling, itching, and difficulty breathing.

resulting in itchy skin and eyes. If they have a severe allergic reaction, they might also have symptoms such as swelling of their tongue or neck and difficulty breathing. Call 999 if you spot these ...