ITEM NAME:8pcs/pack Pain Relief Patch Neck Muscle Massage Medical Orthopedic Plasters Z a.imagelink a:hover.imagelink {color:#db3606;.Rash,ache or excessive skin irritation occurs. If the pain is persistent 8-12 hours after the first patch and thesecond patch may be applied. Stop use and ask a doctor if Children under 12 years old: consult a doctor.