Swollen temples-veins from Botox? Possible side effect?

I have not noticed a correlation between bulging veins in the face and the usage of Botox in my patients since I started injecting Botox in 1993.
Bulging veins may be related to exercise regimens, weight loss, possibly some medication intake and in some people, cardiac conditions.  A new onset of bulging veins warrants a good physical examination by one's primary care provider.
The information provided in Dr. Shelton's answer is for educational purposes only and is not intended to constitute medical advice.  The information provided should not be relied upon as a substitute for consultations with a qualified health professional who may be familiar with your individual medical needs. If you are experiencing a medical emergency proceed to your nearest emergency room.

Thank you for your question.  Your description of more visible veins is likely a result of normal aging.  Botox cosmetic interacts with muscle contracture designed to decrease wrinkling.  Best of luck.

Thank you for your question.  You have been getting Botox for a long time without complication.  It probably has nothing to do with Botox but probably with aging. It is difficult to make an assessment without a formal exam in the office where I can view the skin in multiple angles and observe wrinkles formed with facial expression. Best of luck! 

Thank you for your question.  You have been getting Botox for a long time without complication.  It probably has nothing to do with Botox but probably with aging.  The appearance of veins on the face and in other areas on the body is normal as we age. This has nothing to do with Botox treatment.  Please see your physician for further assessment.
Best of luck

  After 15 years of injecting Botox into the forehead and around the eyes, I can say with confidence that Botox injections have not been found to cause prominent veins in the area.  More likely is the phenomenon of loss of collagen and underlying muscle in the area from aging causing the veins to be more visible and prominent as a result.  You should still be able to continue your Botox to reduce wrinkles without worrying about vein distention as a side effect.

Thank you for your question Kayya. I understand your concern. Botox is a purified protein used to address wrinkles associated with facial expression. When injected into the skin Botox will relax the muscles and smoothen out the overlying wrinkles. The most common areas of treatment are in the upper face. These include the horizontal lines seen on the upper forehead when one raises the brows, the vertical lines seen between the brows when one frowns (frown lines), and the crow's feet seen around the eyes when one smiles.It is difficult to make an assessment without a formal exam in the office where I can view the skin in multiple angles and observe wrinkles formed with facial expression. However, I hope the information provided here is useful.The pivotal studies used 24 units of Botox (12 units per side) to address the crow’s feet. These studies demonstrated that the peak results are seen 14 days after the treatment and most people enjoy their results for 3-4 months. At that point, a maintenance treatment is recommended. While some people start to see results as early as the next day, it can take two weeks for full results so patience is important. We have our patients return two weeks after their treatment to assess their results via photographs. At that time additional units may be added if necessary. 
The appearance of veins on the face and elsewhere on the body is normal and is seen as people mature over time. On the face, common areas that are affected include the forehead region, temples, and around the nose. This has nothing to do with Botox treatments. If I had a patient with the concern described here I would say that it is unrelated to Botox and continued Botox treatments would be safe and effective assuming they have worked well in the past.With any injection, there are risks such as pain, bleeding, bruising, redness, swelling, tenderness, and infection. We take special precautions to minimize these risks such as using a painless technique. We also treat bruises with a laser as early as the next day. Bruises usually resolve within two weeks if untreated. After a laser treatment bruises usually resolve in 1-3 days, but may still take two weeks for full resolution. In addition to these risks, with Botox there is also a risk that the product spreads or diffuses to nearby structures. Spread to nearby muscles can lead to side effects such as the temporary appearance of droopy eyelids or a temporary asymmetric smile.

After a Botox treatment, I recommend that my patients avoid heat exposure, alcohol consumption, and strenuous exercise for 24 hours and not lie down flat for four hours. This is because all of these activities may possibly lead to the movement of the product and consequent side effects such as droopy eyelids. Although there have been no definitive studies shown that these actually occur and some physicians do not provide such aftercare instructions, in the absence of data I err on the side of caution and recommend that my patients avoid such activities.

Please consult with a doctor for specific recommendations. Good luck!