Hives that are caused by an allergic reaction can sometimes be an early sign that your baby is about to have a severe allergic reaction, called anaphylaxis. Symptoms can come on very quickly and can be fatal.
1 Antidepressants can Cause Suicidal Thoughts and/or Behavior in Children. 2  What to do if Your Child is Anxious or Depressed. 3  Antidepressants Approved for Children. 4  Getting Your Child Started on Antidepressants. 5  Signs of Suicidal Thoughts in Children. 6  The Bottom Line on Kids and Antidepressants.
Antidepressants work by changing your body's response to brain chemicals, including serotonin, norepinephrine and dopamine, that affect your mood. These chemicals may also cause your blood pressure to increase. Examples of antidepressants that can raise your blood pressure include: Venlafaxine (Effexor XR)