Hello, Possibilities include: -Bruising, blood vessels close to the surface when pressure irritates become more prominent, stretching tissue may make a cluster of vessels more prominent that are not usually noticed. -reaction to fruit or preservative on skin of fruit such as an allergic reaction. -reaction to dental materials used or position of teeth changed with dental work. -habits such as biting lip or breathing through your mouth drying out tissue. -reaction to content of your saliva when contacts skin. -skin condition requiring evaluation by dermatologist. Is the condition accompanied with any open sores, swelling or pain? Additional details would be helpful to assist with a diagnosis and make recommendations. It may be a normal condition. You are able to test for specific friut reactions by trial and elimination. Try cutting the fruit to see if you have the same reaction. Consider any changes to dental products used. Allergic reactions are possible when trying different products. Increase in bruising can indicate other systemic concerns. Do you bruise easily? An increase in blood pressure can make vessels more prominent. Do you have prominent veins elsewhere such as spider veins? Dermatologists may offer treatment options to reduce visibility of these vessel conditions. Make sure to check your blood pressure. Have an updated physical with blood tests to check for deficiencies. Keep well hydrated. This helps flush away inflammation. taking anti-inflammatory medications may offer relief. Benadryl, an antihistamine, reduces swelling and assists healing. Bring your concerns to the attention of your dentist. Your dentist can check your bite and make adjustments if needed. Sometimes the gum tissue can react to metals or cements used in the mouth. Have you noticed any changes close to your recent dental work? Oral infections can be carried in salvia and with contact to the skin around the mouth cause a reaction. Your dentist may suggest a visit to the dermatologist if there are no dental conditions that require treatment to resolve your concerns. Regular good daily dental hygiene is important. Proper nutrition, vitamins and hydration affects your overall health. Avoid irritants such as smoking. I hope your condition will improve and that my suggestions are helpful. Thank you for your inquiry.