Diving Medicine Q&A

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Understanding Persistent Headaches After Diving: Causes and Solutions

Persistent headache after diving? Hello Dr. Lin: Last week (Friday, Saturday, Sunday), I went to Kenting to learn basic scuba diving. On Saturday (11/06), I dove three times, with the deepest dive reaching 13 meters. After coming ashore, I experienced pain in the upper right fron...


Dr. Lin Zhengyan Reply:
Hello Jason: Your issue may be related to air embolism or barotrauma. Air embolism occurs when a diver holds their breath and does not exhale during ascent, causing partial rupture of the lung alveoli, which allows air to enter the bloodstream and reach the brain, resulting in an...

[Read More] Understanding Persistent Headaches After Diving: Causes and Solutions


Is It Decompression Sickness? Understanding Symptoms After Swimming

Is this decompression sickness? Recently, I have been on a weight loss diet and have not experienced any discomfort until August 18th, when I went swimming at a community pool with my sister. I attempted a backward bending motion in the water while my sister stepped on my foot. A...


Dr. Lin Zhengyan Reply:
Hello Saigoo: You do not have decompression sickness; your condition may be caused by a diet for weight loss. It would be advisable to consult a neurologist.

[Read More] Is It Decompression Sickness? Understanding Symptoms After Swimming


Understanding Diving-Related Headaches: Causes and Solutions

Headache issues Hello Dr. Lin, I have recently started diving and am currently in the certification phase. During my ocean practice on August 1st, I experienced significant pain near my forehead and eyebrows when I descended to about 2 meters, feeling as if something was being p...


Dr. Lin Zhengyan Reply:
Hello LIPO: Your issue is barotrauma. This occurs in a closed gas space where the volume of gas changes due to pressure alterations, leading to tissue deformation or damage caused by the change in gas volume, known as barotrauma. You are currently experiencing mild discomfort, wh...

[Read More] Understanding Diving-Related Headaches: Causes and Solutions


Voice Hoarseness After Diving: Causes and Solutions for Divers

In the past year, my voice has become hoarse after each dive? Over the past year, I have experienced hoarseness lasting about a week after each dive. I love diving very much and go diving every Saturday and Sunday during the summer. Sometimes, the hoarseness does not improve befo...


Dr. Lin Zhengyan Reply:
It may be caused by an infection or seawater contamination. It is recommended to avoid diving to improve the condition.

[Read More] Voice Hoarseness After Diving: Causes and Solutions for Divers


Understanding Diving-Related Skin Changes: When to Seek Medical Advice

Is it decompression sickness? Hello, I have been recreational diving for about three years, with approximately 110 dives. I dive throughout the year, mostly from the shore, and during a few boat dives, I have had 1 or 2 instances where I surfaced before completing the required de...


Dr. Lin Zhengyan Reply:
Hello! This phenomenon should not be related to diving. Since no skin spots were observed, it is impossible to determine whether it will resolve on its own. Please seek medical attention and visit a dermatologist.

[Read More] Understanding Diving-Related Skin Changes: When to Seek Medical Advice


Understanding Nosebleeds in Freediving: Causes and Solutions

The issue of experiencing nosebleeds while diving? Hello Dr. Lin, I engage in freediving every week, using only a mask, snorkel, and fins for light diving. However, I have noticed a phenomenon during my dives: whenever I challenge myself to dive deeper, I surface to find that I...


Dr. Lin Zhengyan Reply:
Hello Steve: Your issue is related to barotrauma, which is not a major concern. If you do not dive, it will not cause further problems. However, if you experience severe nosebleeds or persistent bleeding after diving, you should consult an otolaryngologist for treatment. Barotrau...

[Read More] Understanding Nosebleeds in Freediving: Causes and Solutions


Overcoming Nausea: Solutions for Frequent Divers Who Get Seasick

Every dive must result in vomiting? Hello Dr. Lin, I have been struggling with a problem for a long time: I tend to vomit almost every time I go diving. I usually don’t vomit when I’m in a car (if I’m used to it), but if I haven’t been in a car for a while, I find it easy to get...


Dr. Lin Zhengyan Reply:
Hello Masa: During diving, the head movement can be more intense due to the influence of the boat or waves compared to being in a car, making it easier to experience dizziness and nausea. Your body is more prone to motion sickness, and since taking anti-motion sickness medication...

[Read More] Overcoming Nausea: Solutions for Frequent Divers Who Get Seasick


Understanding Surface Temperature and Burn Severity in Diving Medicine

Surface temperature of objects and burns? To cause a third-degree burn, the surface temperature of an object typically needs to be around 150°F (65°C) or higher. The duration of contact required to sustain such a burn can vary, but generally, contact for more than a few seconds (...


Dr. Lin Zhengyan Reply:
Hello, Hsiao Fu-Chuan: Your question is outside my area of expertise. After researching relevant information and consulting with digital physicians, I still do not have an answer to provide you. I apologize for this. You may want to consult with a plastic surgeon, a general surge...

[Read More] Understanding Surface Temperature and Burn Severity in Diving Medicine


Is It Diving-Related Illness? Understanding Symptoms After Scuba Diving

Is this decompression sickness? I just started learning to dive this year and have limited experience. Recently, I went diving in Kenting, averaging two dives a day, sometimes three, including boat dives. Each time, I followed my instructor and only surfaced after completing a sa...


Dr. Lin Zhengyan Reply:
Hello, based on your description, you may have decompression sickness (also known as "the bends"). When ascending to the surface after diving, the water pressure on your body gradually decreases (as pressure decreases, the amount of nitrogen gas that can be dissolved in...

[Read More] Is It Diving-Related Illness? Understanding Symptoms After Scuba Diving


Can Hernia Patients Safely Enjoy Recreational Diving?

Hernia and Diving Hello doctor, can a person with a hernia engage in recreational diving? What impact does a hernia have on diving? Thank you for your response.


Dr. Lin Zhengyan Reply:
Hello Wesley: The concerning aspect of a hernia is that the intestines can protrude through the hernial opening into the groin area, but most of the time they can retract back. If the intestines become trapped in the groin and cannot be reduced, it can ultimately lead to ischemia...

[Read More] Can Hernia Patients Safely Enjoy Recreational Diving?


Understanding Dive-Related Migraines: Symptoms and Solutions

Migraine caused by diving? Hello Dr. Lin, This summer, I went diving about 30 times, but I often experience symptoms of migraines and even nausea. Here’s a description of my situation: 1. It usually only occurs on the first dive. 2. I feel uncomfortable underwater, and once ...


Dr. Lin Zhengyan Reply:
Hello, Zhi Yun: Headaches (migraines) caused by vascular factors are more common in individuals under 30 years of age. To date, the exact causes of migraines remain unclear; however, certain triggering factors must be considered, such as neurogenic reflexes or stimuli that lead t...

[Read More] Understanding Dive-Related Migraines: Symptoms and Solutions


Understanding the Functions of a Model Respirator in Diving Medicine

The purpose of the artificial lung ventilator model is to assist or replace the function of natural respiration in patients who are unable to breathe adequately on their own. It corresponds to the human respiratory system, specifically functioning like the lungs? The purpose of t...


Dr. Lin Zhengyan Reply:
Fat Cat: After carefully reviewing your question multiple times, I still cannot understand it. I tried to answer, but I really cannot provide a response.

[Read More] Understanding the Functions of a Model Respirator in Diving Medicine


Essential Health Tips to Consider Before Diving Activities

Preparation Steps Before Engaging in Diving Activities Dr. Lin: Hello! My husband is interested in going scuba diving at the invitation of a friend, and I am quite concerned. Could you please advise on what health considerations he should pay attention to beforehand?


Dr. Lin Zhengyan Reply:
Mrs. Wang: The basic physical requirements for diving are not strict; as long as one meets general fitness and good health standards, they are acceptable. Special attention should be paid to the respiratory system and ears. 1. Age: No specific restrictions. 2. Respiratory Syst...

[Read More] Essential Health Tips to Consider Before Diving Activities


Which Medical Specialty Should I See for Facial Nerve Paralysis?

Facial nerve paralysis should be evaluated by a neurologist? Hello: I had a history of facial nerve paralysis six or seven years ago and received treatment at the ENT department of Cheng Kung University Hospital (specialized in facial nerve paralysis). Recently, I have been exper...


Dr. Lin Zhengyan Reply:
Hello Peter: You can consult the Neurology Department or the Facial Nerve Paralysis Clinic at National Cheng Kung University Hospital. If it is confirmed to be facial nerve paralysis, hyperbaric oxygen therapy has auxiliary therapeutic effects (Tainan Chi Mei Medical Center Hyper...

[Read More] Which Medical Specialty Should I See for Facial Nerve Paralysis?


Understanding Dizziness and Numbness After Diving: What You Need to Know

excuse me? I sometimes experience dizziness, numbness in my hands, and a sensation of numbness in my right ear. Is this normal? I started experiencing these symptoms after learning to scuba dive, and I'm a bit worried about it.


Dr. Lin Zhengyan Reply:
You may have decompression sickness (also known as "the bends") and should seek medical attention at a hospital equipped with hyperbaric oxygen therapy chambers. Below is an introduction to decompression sickness for your reference. **Pathophysiology of Decompression S...

[Read More] Understanding Dizziness and Numbness After Diving: What You Need to Know


Understanding Side Effects of Ampicillin and Clindamycin in Diving Medicine

Antibiotics What are the side effects of ampicillin and clindamycin? What are the side effects of using these two antibiotics together? Is ampicillin a type of aspirin?


Dr. Lin Zhengyan Reply:
Mrs. Li: Ampicillin is a synthetic penicillin, and its side effects include: 1. Occasionally causing shock symptoms such as discomfort, abnormal oral sensations, wheezing, dizziness, urgency to defecate, and tinnitus. 2. Allergic reactions: fever, rash, urticaria, etc. 3. Liver: ...

[Read More] Understanding Side Effects of Ampicillin and Clindamycin in Diving Medicine


Understanding Diver's Disease: Symptoms, Diagnosis, and Treatment Options

Decompression sickness Dr. Lin, I went scuba diving abroad two weeks ago, and upon returning, I noticed symptoms similar to decompression sickness type I, including fatigue, itchy skin, and joint and muscle pain. I would like to ask: 1) How can I further differentiate whether it ...


Dr. Lin Zhengyan Reply:
Hello Justine: The clinical symptoms of decompression sickness, also known as "the bends," can be categorized into two types based on severity: Type I (mild) and Type II (severe). Symptoms from both types can occur individually or in combination. Symptoms of Type I can ...

[Read More] Understanding Diver's Disease: Symptoms, Diagnosis, and Treatment Options


Understanding the Effects of Simultaneous Antibiotic Injections

The issue of antibiotics? What symptoms may occur when two different antibiotics are injected into the body simultaneously?


Dr. Lin Zhengyan Reply:
Mrs. Li: Antibiotics are used to treat bacterial infections, but there are many types of bacteria, and a single antibiotic cannot treat all bacterial infections. Therefore, there are various types of antibiotics. Sometimes, patients may have multiple bacterial infections concurre...

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Understanding the English Term for Diving Medicine Specialty

Underwater Medicine Hello Dr. Lin, I would like to ask you: how is the medical specialty of diving medicine written in English? Thank you for your professional response and time... ^_^ A citizen seeking answers, Frances.


Dr. Lin Zhengyan Reply:
Hello Frances: English name: Department of Diving and Hyperbaric Medicine

[Read More] Understanding the English Term for Diving Medicine Specialty


Jellyfish Stings: Symptoms, Risks, and When to Seek Medical Help

What symptoms can occur from a jellyfish sting? Is medical attention necessary? A couple of days ago, I went snorkeling in Kenting and seemed to have been stung by a jellyfish on my left arm, resulting in a red, swollen oval-shaped bump. About three hours later, I experienced num...


Dr. Lin Zhengyan Reply:
Xiao Xin: Jellyfish have many tentacles, some of which can extend several feet. Each tentacle contains thousands of nematocysts, which release toxins when triggered. When a person is struck by the long tentacles, the nematocysts immediately discharge their stinging cells, and the...

[Read More] Jellyfish Stings: Symptoms, Risks, and When to Seek Medical Help




Diving Medicine FAQ

Decompression Sickness Diver'S Disease