Stop taking doxycycline and seek immediate medical help if you experience any of these serious side effects: severe allergic reactions (such as swelling of your face, lips, tongue, or throat; difficulty breathing; hives), severe skin reactions (like Stevens-Johnson syndrome or toxic epidermal necrolysis), signs of liver damage (jaundice, dark urine, light-colored stools, abdominal pain), signs of esophageal irritation (difficulty swallowing, chest pain), unusual bleeding or bruising, or signs of a Clostridium difficile infection (severe diarrhea).
Contact your doctor right away if you develop signs of increased pressure in your skull (severe headache, blurred vision, bulging fontanelles in infants), hearing problems, or unusual weakness in your muscles. These symptoms might require prompt attention and could indicate a serious complication.
Report any new or worsening symptoms to your doctor, even if they seem minor. Careful monitoring is crucial for your safety while taking doxycycline.
Note that this information is not exhaustive, and you should always consult your doctor or pharmacist for personalized advice. They can provide guidance based on your specific medical history and the dosage of doxycycline you are taking.