In clinical trials, the most common adverse effect of this treatment was injection site reaction (ISR). This can occur in up to 49% of patients and usually presents as erythema, pruritus ...

A 10-year-old boy presented to the clinic with a chief complaint of a reaction on his leg 2 days ... 7 cm in diameter were noted about the injection site (Fig. 1). Vesicular lesions and inguinal ...

Hagedorn 1 reported that over 400 injections had been given at the Mayo Clinic "without any significant reaction." Lichtman, 2 in a recent article on therapy of anemias stated, "its administration ...

Botox can cause side effects that range from mild to serious. Examples include headache, injection site reactions, and urinary retention. If side effects from Botox become difficult to tolerate ...