Dry needling is generally very safe, though some minor side effects can occur in a small percentage of patients. Temporary pain during treatment occurs in 60-70% of cases, while minor bleeding or bruising occurs in 15-20% of treatments and is considered normal. Drowsiness, tiredness or dizziness may occur in 1-3% of patients. Fainting can occur in 0.3% of patients, especially with needling of the head or neck. Serious side effects are extremely rare, occurring in less than 0.01% of treatments, and may include damage to small nerves or blood vessels, usually resulting in temporary numbness, tingling or pain. Dry needling aims to stimulate the