I'm sorry to hear about the discomfort you're experiencing with rashes on your lips and reddened ulcers in your mouth. These symptoms can be caused by viral infections such as herpes simplex virus, which often leads to cold sores and mouth ulcers.

Here are some steps you can take:

• Consult a doctor, preferably a dermatologist or an infectious disease specialist, to get an accurate diagnosis and appropriate treatment.
• Antiviral medications like Aciclovir (found in products such as Zovirax 200 Tablet) are commonly used to manage viral infections causing such symptoms. However, these should only be taken under medical supervision.
• Maintain good oral hygiene and avoid spicy, acidic, or rough-textured foods that may irritate the ulcers.
• Keep your lips moisturized and avoid picking or scratching the rashes.
• If you experience additional symptoms like fever, severe pain, or spreading of the rash, seek medical attention promptly.

Please avoid self-medicating and ensure you follow the advice of your healthcare provider for safe and effective treatment. If symptoms worsen or do not improve, visiting a specialist doctor is important.To narrow down potential causes, we will need some more information.Please tell me your age and gender. I understand you're concerned about the rashes on your lips and ulcers in your mouth.