Medical Treatments

If you feel unwell, have a cold, or just feel very tired, then it is best you take a day off from diving and snorkeling.

Avoid diving if you have:

• Cold, flu, or sinus congestion → can block your ears/sinuses and lead to barotrauma (painful or serious injury)
• Fever or infection → your body is already stressed
• Chest congestion or breathing issues → increases risk underwater
• Stomach illness (vomiting/diarrhea) → dehydration + risk of panic
• Severe fatigue or weakness → affects judgment and safety
• You need to equalize pressure in your ears and sinuses—being blocked makes this difficult or impossible
• Diving requires clear thinking and energy
• Illness can increase risk of decompression sickness and panic underwater

Be cautious:

• Some meds (like decongestants) can wear off during the dive, causing problems on ascent