Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using betamethasone and call your doctor at once if you have:
severe skin irritation where the medicine was applied; or
signs of skin infection (swelling, redness, warmth, oozing).
Your skin can absorb topical steroid medicine, which may cause steroid side effects throughout the body. Stop using betamethasone and call your doctor if you have:
blurred vision, tunnel vision, eye pain, or seeing halos around lights;
slow wound healing, thinning skin, increased body hair;
increased thirst or urination, dry mouth, fruity breath odor;
weight gain, puffiness in your face; or
muscle weakness, tired feeling, depression, anxiety, feeling irritable.
Steroids can affect growth in children. Tell your doctor if your child is not growing at a normal rate while using this medicine.
Common side effects may include:
itching, redness, burning, stinging, or blistering of treated skin;
skin bruising or shiny appearance; or
folliculitis (redness or crusting around your hair follicles).
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Sernivo side effects (more detail)
