Final answer:
Petechiae after cupping therapy are considered a normal reaction due to capillaries rupturing from the suction and not an adverse reaction.
Step-by-step explanation:
Petechiae are small red or purple spots on the skin that result from blood leaking out of damaged vessels. When a patient undergoes cupping therapy, the suction applied can cause capillaries beneath the skin to rupture, leading to petechiae. Since cupping is known to cause skin discoloration as part of its mechanism, petechiae in this context are considered a normal reaction rather than an adverse one. Therefore, the presence of petechiae after cupping is not typically an adverse reaction, but rather a common and expected outcome of the procedure.