Where should I go if I experience side effects from a procedure?

If vascular occlusion is suspected, the answer is to go to a medical facility immediately, not to "wait and see." When a dermal filler blocks a blood vessel, you may experience severe pain, skin turning white (blanching), a mottled or net-like discoloration, or a bluish or dark color change. Blurred or loss of vision is the most urgent sign. These symptoms are known to usually begin during the procedure or within minutes to hours afterward.

Occlusion caused by HA (hyaluronic acid) filler can be treated emergently with an enzyme called hyaluronidase, and it is reported that the faster the treatment, the more tissue damage can be reduced. Recovery becomes more difficult over time, so please do not dismiss symptoms as "just a bruise" and contact or visit a clinic immediately.

A clinic's ability to respond to side effects can be gauged by whether a board-certified dermatologist directly provides care, whether emergency medications and protocols are in place, and whether there is a post-procedure contact system. Differentiating side effects requires not just procedural experience but also diagnostic training in skin diseases as a whole, so it is important whether a specialist is on-site and directly monitors your progress.

Also, if a clinic performs dermal filler procedures, check whether they stock emergency medications such as hyaluronidase, and whether they provide contact methods (phone, messenger) and follow-up procedures in case of abnormal symptoms. Clinics that explain post-procedure precautions and warning signs in writing tend to respond faster in side effect situations than those that only perform the procedure without providing aftercare guidance.

Yes, asking about this before the procedure is your right as a patient and is actually recommended. Clinics that give specific answers to questions like "How do I contact you if side effects occur?", "Do you have emergency medications like hyaluronidase?", or "Where should I go if symptoms occur at night or on weekends?" are more likely to have a well-established response system.

If a clinic seems uncomfortable with such questions or only answers "there are no side effects," it is wise to reconsider. All procedures carry a possibility of adverse reactions, only differing in degree, so a clinic that transparently explains the risks and provides response procedures is one you can trust.

Taking photos of the affected area along with the time is the most reliable way to record symptoms. Smartphone photos automatically save the time taken, so taking 1–2 photos per day from the same angle and under the same lighting allows you to objectively compare whether symptoms are improving or worsening. For symptoms that cannot be captured in photos, such as pain or heat, make a note of when they started and how the intensity changes.

It is also helpful to keep documents related to the procedure. Receipts and procedure records containing the date and details of the procedure, as well as the product name or authenticity certificate for the product used, are important for future medical consultations and identifying the cause. These organized records help any medical facility—whether the original clinic or another—make faster assessments during a consultation, so we recommend making it a habit to keep such records from the moment you notice abnormal symptoms.