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 can cause unpleasant side effects. Symptoms such as nausea, weight gain or sleep problems can be common initially. For many people, these improve within weeks of starting an antidepressant. In some cases, however, antidepressants cause side effects that don't go away. Talk to your doctor or mental health provider about any side effects you're having.