Which side effect is common with the use of mild analgesics?

Mild analgesics, such as acetaminophen or nonsteroidal anti-inflammatory drugs (NSAIDs), are commonly used to relieve pain and are generally well-tolerated. One of the potential side effects that can occur, although it may not happen in all patients, is a headache. This can be due to various factors, including the timing of medication administration, sensitivity to the medication, or individual physiological responses. Utilizing mild analgesics can sometimes lead to either the alleviation or onset of headaches, particularly if the analgesic is used to treat pain that can be related to headaches in the first place.

The other options, such as severe abdominal pain, hypotension, and increased heart rate, are not typically associated with mild analgesics. Severe abdominal pain is more likely linked to gastrointestinal complications or other serious conditions rather than the use of mild analgesics. Hypotension generally arises from more potent pain medications or other cardiovascular issues, and increased heart rate is not a common side effect of mild analgesics but may occur in response to pain or anxiety rather than the medication itself. Thus, headache is recognized as a more relevant and common side effect in the context of mild analgesics.