Keloid

A keloid is an overgrowth of scar tissue that forms when there is excess collagen during the healing process of a skin injury. Common injuries where keloids form are from burns, piercings, acne and surgical incisions. They are often raised, hairless and hard. They can be itchy or have a burning sensation but are usually painless.

A study found that the overall migraine risk was 2.29 times greater in the keloids cohort compared with a non-keloid cohort after adjustment for age, gender and relevant comorbidities.¹

Risk factors for migraine in the keloid group were stroke, fibromyalgia, insomnia, anxiety, asthma and female gender, which are all comorbid with migraine.¹