Common symptoms: causes and when to worry

For trouble breathing, chest pain, confusion, a baby under 3 months with a fever, or a child who is hard to wake, stop reading: call 911 or go to the ER. See the warning signs for going to the ER.

Each symptom page explains what may be causing the symptom, what you can do at home, the warning signs that can't wait, and when a video visit is a good option. They are written for Puerto Rico, where a fever can also be dengue, and each one cites its official sources.

Most fevers, coughs, headaches and rashes can be assessed by video. You see Dr. Diana Nieves Castro, a Puerto Rico–licensed general practice physician: she asks questions, examines you on camera and tells you what is going on; if needed, she gives you a lab order for a lab near you. If appropriate, she prescribes and we send your prescription to your pharmacy. It is telehealth in Puerto Rico with video visits 24/7, in English or Spanish, for adults and children of all ages; you need to be physically in Puerto Rico during the visit.

For things that can't wait, use virtual urgent care. If the symptom points to a specific condition, see the conditions we treat; for dengue, certificates or getting sick on vacation, see our guides.

We see children of all ages, with a parent or legal guardian on camera. The children's pages explain, for example, fever in children and when to worry at each age. To book, see online doctor visits for kids.