What causes pain during blood drawing?

Apr 04, 2023 Source: Cainiu Health

Dr. Yang Shuwen

Introduction

Pain during blood drawing may be caused by improper pressure, peripheral nerve injury, infection, or inflammation. If the pain persists without improvement, targeted treatment is necessary. In addition, pain during blood drawing is often related to psychological factors; patients who are anxious or tense during the procedure may perceive more pain at the draw site. Reading books to divert attention and relaxing the mind can help alleviate the symptoms.

Blood draw pain may be caused by improper pressure, peripheral nerve injury, infection and inflammation, etc. If the pain persists without relief, targeted treatment is necessary.

1. Improper Pressure

If adequate pressure is not applied after blood collection, bleeding at the puncture site may continue, leading to hematoma formation. The surrounding tissues may become compressed, resulting in pain. Applying cold compresses initially can help control bleeding. After 48 hours, switch to warm compresses to improve blood circulation and promote the resolution of the hematoma.

2. Peripheral Nerve Injury

The subcutaneous tissue contains abundant peripheral nerves. If the needle insertion during blood draw is improper, it may injure these nerves, causing pain at the site. For individuals highly sensitive to pain or experiencing severe discomfort, ibuprofen tablets may be taken orally under a doctor's guidance for pain relief.

3. Infection and Inflammation

If the puncture wound is not properly cleaned and cared for after blood collection, the site may become infected and inflamed, leading to local redness, swelling, and pain. Under medical guidance, the area can be disinfected with iodine solution, and amoxicillin capsules may be taken orally to treat the inflammation.

In addition, blood draw pain may often be related to psychological factors. Patients who feel anxious or tense during the procedure may perceive increased pain at the site. Reading or engaging in other activities to distract attention and relax the mind can help alleviate symptoms, which typically do not require specific medical treatment.

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