Medication Can Heighten Sun Sensitivity During Hot Weather

Summer vacations often promise relaxation, but for some, they can bring unexpected health challenges. A recent experience on the Greek island of Rhodes highlighted the risks associated with medication and sun exposure. After a week of enjoying the sun, one traveler faced debilitating dizziness and nausea, ultimately discovering that their medication for Attention Deficit Hyperactivity Disorder (ADHD) increased sensitivity to heat.

Dr. Alison Cave, chief safety officer at the Medicines and Healthcare products Regulatory Agency (MHRA), explained that many medications can alter how the body reacts to heat and sunlight. This includes a broad range of prescriptions, from diuretics and blood pressure medications to antidepressants and antipsychotics. Some drugs can increase skin sensitivity to the sun, suppress thirst, and reduce the body’s ability to sweat, while stimulants can elevate body temperature, raising the risk of overheating.

The traveler’s symptoms, which manifested after basking in Rhodes’ intense heat, were a classic case of heat exhaustion. The week featured temperatures reaching the mid-30s Celsius, a stark contrast to their usual climate. Unaware of the heightened risk due to their medication, they consumed less water than needed and sought sun exposure during peak hours, inadvertently inviting health complications.

Dr. Cave emphasized the importance of understanding medication side effects. “There are many medicines that can increase your sensitivity to heat and sunlight,” she stated. The informational leaflet accompanying prescriptions often contains crucial warnings, yet many may not read these details thoroughly.

Recognizing the signs of heat exhaustion is crucial. These can include dizziness, excessive sweating, headaches, fatigue, nausea, and muscle cramps. If left unaddressed, heat exhaustion can escalate to heatstroke, a serious medical emergency that requires immediate attention. The NHS recommends moving the affected individual to a cool environment, removing unnecessary clothing, providing hydrating fluids, and cooling the skin. If symptoms persist after 30 minutes, it is essential to seek emergency assistance by calling 999.

Emergency departments across the UK have recently reported a surge in patients seeking urgent care during the August heatwave, underscoring the need for increased awareness regarding medication and heat sensitivity.

Dr. Cave advises that individuals taking medication during warmer weather should stay hydrated, remain informed, and take sensible precautions. This includes ensuring medications are stored in a cool, dry place, away from direct sunlight. Patients should also report any side effects related to heat or sunlight through the Yellow Card scheme, and consult with healthcare professionals before discontinuing any medication.

Ultimately, this traveler returned home from their holiday not only with a sun tan but also with a valuable lesson about the impact of medication on health and the necessity of thoroughly reading accompanying leaflets. Awareness is key to enjoying the summer safely, particularly for those relying on medications that may alter their body’s response to heat.