Botox injections are a common treatment for a multitude of ailments, ranging from excessive sweating (hyperhidrosis) and headaches to wrinkle formation. These injections contain a potent neurotoxin called botulinum. When injected into a muscle, Botox blocks the action of acetycholine, an important neurotransmitter needed for muscles to contract. Although Botox injections are approved by the U.S. Food and Drug Administration (FDA) for many uses, there are also potential serious complications that you should be aware of before receiving treatment.
Bruising
Bruising of the skin is one common complication of Botox injections. Bruising occurs when blood vessels are damaged during the injection. The damaged blood vessels leak blood into the surrounding tissue, which can be seen through the skin as the look of a bruise.
Ptosis
Ptosis is the drooping of the eyebrow or eyelid, and although rare, can be a potential complication of Botox injections. Ptosis occurs when areas near the eyes are treated, and the toxin leaks into the muscles of the eyelids or the muscles beneath the eyebrows. According to board certified dermatologist Robert S. Bader, M.D., this effect is not treatable, but typically wears off within three to four months.
Allergic Reaction
The chance of serious allergic reaction is also a potential side effect of Botox treatments. Mild allergic reactions may include skin irritation, itching or rash, while more serious reactions may include severe swelling, difficulty breathing, and dizziness. If you feel any unexpected effects from your Botox treatment, you should seek medical attention as soon as possible.
Toxin Spread
The same neurotoxin used in Botox injections is also related to a serious illness called botulism. In some rare cases, Botox toxins can spread into the body and mimic the same symptoms as botulism, such as muscle weakness, slurred speech and difficulty swallowing.
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