Author: Dr. Christoph Bendick, Dermatologist, Intercare Hospital
Moving to the tropics can represent a dream lifestyle: Warm weather, year-round sunshine, beaches, outdoor dining, and island travel attract many of foreigners to destinations across Southeast Asia and other tropical countries. However, alongside the benefits of tropical living comes a health risk that is often seriously underestimated: Skin damage. Ultraviolet radiation near the equator is significantly more intense and far more constant throughout the year than in more temperate climates. Even people who rarely burn in Europe or North America may experience cumulative skin damage surprisingly quickly after relocating to tropical countries. Relevant factors can be:
- More time outdoors
- Lighter clothing
- Increased recreational sun exposure
- Significantly higher UV intensity year-round
Thus, skin cancer awareness should become part of everyday life — not just something associated with holiday making. While this applies basically to everyone, particular care has to be taken by fair-skinned persons, people with a history of repeated sunburn and individuals with a personal and family-history of cancer or precancerous lesions of the skin. Also long-term immunosuppressed individuals like organ recipients are at particular risk. While many people are careful to apply sunscreen e.g. on the beach or while hiking, some exercise little protection during everyday life. However, cumulative low-level exposure over years can be just as dangerous as occasional severe sunburns. Particularly in Western expats, tanning remains culturally associated with health, fitness, attractiveness, and a vacation lifestyle. In tropical environments, this mindset can become especially dangerous because UV exposure is constant rather than seasonal. Note: A tan is not a sign of healthy skin. It is a biological response to skin damage caused by ultraviolet radiation. Thus, dermatologists increasingly emphasize prevention rather than cosmetic appearance. Fear to produce insufficient vitamin D while protecting from sunlight is in tropical countries usually not justified. In case of worry about vitamin D deficiency, this can be checked and managed safely with medical advice, diet, or supplementation rather than intentional sun exposure.
Often, people think that sunscreen is sufficient as a protection from UV-light. In reality, sun protection should be broader and more consistent:
- Use broad-spectrum sunscreen, ideally SPF 50+
- Wear hats and UV-protective clothing
- Use sunglasses
- Avoid direct midday sun
- Seek shade whenever possible
- Reapply sunscreen frequently, particularly after swimming and heavy sweating
- Protect exposed areas during daily bicycle, motorbike and tuk tuk-rides
There are three major types of skin cancer. They are mostly, but not always localized in UV-exposed areas of the skin.
Basal Cell Carcinoma is the most common form, often appearing as a pearly, sometimes crusty bump or flat shiny pink lesion. It almost never spreads but can become locally very destructive.
Squamous Cell Carcinoma presents mostly as a non-healing sore which increases slowly in size. It occurs often on those areas which are most exposed to UV-light: Face, scalp, ears, forearms, and hands. Untreated, it can spread to other body areas.
Malignant melanoma is the most alarming variety of skin cancer because of its ability to metastasize rapidly. Early detection is critical in this tumour which mostly presents as a very dark irregular spot but can also take different shape like a raised bump or node that can be red, pink, brown, or black, and may bleed easily. It can appear in any body site, even on mucous membranes but is particularly frequent in sun-exposed areas.
In addition, there are also precancerous lesions, presenting as rough, non-healing plaques, particularly in body areas with a long history of UV-exposure.
Important warning signs indicating the possible presence of skin cancer include:
- New or changing moles
- Non-healing sores
- Bleeding lesions
- Rapidly growing nodules
- Irregular pigmentation
- Persistent crusting
Any lesion that evolves over time should be dermatologically evaluated.
While it is certainlybeneficialto perform regular skin checks at yourself, yearly dermatological controls in order to detect suspicious lesions are strongly recommended. Early diagnosis and timely therapy are associated with significantly better outcomes. This is especially true for malignant melanoma.
Skin Cancer Awareness is not about avoiding the outdoors. It is about adapting intelligently to a different environmental reality. The combination of strong UV radiation, outdoor lifestyles, and long-term cumulative exposure makes prevention essential for expatriates living in the tropics. Consequently, the most important tools are: Awareness, routine protection, and early detection.
