Our expert says:
No unfortunately you can't prevent them. Unless they are very unsightly you can just leave them! They usually are not dangerous, but if you have a particularly painful one, it will be wise to ask your doctor just to examine it to exclude other causes for the pain like infection or bleeding or tumour formation.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.