Dysport caused chronic tinnitus - is there a known link?

While there are anecdotal reports and patient experiences suggesting a potential link between neurotoxin injections like Dysport (abobotulinumtoxinA) and the onset of tinnitus, a direct causal relationship has not been established in the medical literature. Here are some considerations regarding your situation:

Current Medical Understanding: As of now, there is no definitive scientific evidence connecting Dysport or other botulinum toxin products directly to tinnitus. Most clinical studies and official product information do not list tinnitus as a common side effect.

Post-Market Reports: Despite the lack of formal recognition in clinical trials, there are post-market reports from patients experiencing tinnitus after receiving botulinum toxin injections. These reports are valuable for ongoing safety monitoring and may prompt further investigation.

Potential Factors: The onset of tinnitus can be influenced by various factors, including environmental conditions (like heat), physical activities, or stress, which might coincide with the timing of your treatment but not necessarily be caused by it.

Consultation with Specialists: If you are experiencing persistent tinnitus, it is important to consult with an otolaryngologist (ENT specialist) or an audiologist. They can help determine the underlying cause of your symptoms and recommend appropriate management or treatment options.

Reporting Side Effects: If you suspect a connection between your treatment and tinnitus, consider reporting your experience to the relevant health authority or the manufacturer. This can contribute to a better understanding of potential side effects.

While the link between Dysport and tinnitus remains inconclusive, your experience is important and should be discussed with healthcare professionals to ensure proper care and attention.