You are working at an outdoor cafe on a hot summer day. Suddenly you hear a commotion at a nearby table. You make sure the scene is safe. As you approach the person you notice they appear responsive, but they are having trouble breathing. Which of the following sudden illnesses are you most likely to suspect? Select 3 answers.

Based on the symptoms described, the three most likely sudden illnesses could be:

1. Heat Exhaustion: This is a condition whose symptoms may include heavy sweating and a rapid pulse, a result of your body overheating. It's one of three heat-related syndromes, with heat cramps being the mildest and heatstroke being the most severe.

2. Asthma Attack: Asthma symptoms can be caused by inhaling substances called allergens or triggers, or by other types of irritants. In an asthma attack, the muscles around the airways tighten up and the airway lining also becomes swollen or inflamed and thicker mucus — more than normal — is produced. All of these factors — bronchospasm, inflammation, and mucus production — cause symptoms such as difficulty breathing, wheezing, coughing, shortness of breath, and difficulty performing normal daily activities.

3. Allergic Reaction: An allergic reaction can cause symptoms similar to asthma, but can also cause hives, itching, and swelling. In severe cases, an allergic reaction can lead to anaphylaxis, a severe and potentially life-threatening allergic reaction.

Remember, it's important to call for medical help immediately if someone is having trouble breathing.