Sun allergy: symptoms, causes and effective prevention

The arrival of good weather invites you to enjoy the outdoors, but for some people, exposure to the sun can become a real problem. If you notice redness, itching or rashes after spending a few minutes under the sun, what is known as sun allergy may suffer. In this practical and preventive guide of Viamed Salud we explain everything you need to know about this condition: from its causes and symptoms to the most effective treatments and ways of preventing it.

We want to thank the collaboration of Dr. José Antonio Heras Tabernerodermatologist of Viamed San Fernando Medical Centerfor its valuable contribution in the elaboration of this guide. Its extensive experience in the diagnosis and treatment of skin diseases, together with its commitment to dermatological health, guarantees that the information presented here is backed by the most updated and reliable medical knowledge.

What is sun allergy?

What we popularly know as “sun allergy” actually refers to several skin reactions caused by exposure to sunlight. The most common are:

• Light Polymorphic Eruption (EPL): The most frequent way. It especially affects young women with clear skin.
• Solar urticaria: More rare, it appears quickly after the exhibition.
• Photoallergic reactions: caused by medications or products applied to the skin that are activated with sunlight.

How does the skin act before this reaction?

Sun allergy occurs when the immune system abuses anomalous to ultraviolet rays (UVA or UVB), generating inflammation, itching and skin lesions.

How to know if I have sun allergy?

• Fast start: The symptoms appear between minutes and a few hours after exposing yourself to the sun.
• Affected areas: neck, neckline, forearms and upper chest are usually the most sensitive.
• Reappearance: If it happens to you every time you take the sun in spring or summer, it is a clear sign.

It should not be confused with solar burns (which affect even after long exhibitions) or with echceptes or skin infections.

Most common symptoms of sun allergy

Redness, itching and rashes

It is the most frequent manifestation. The skin gets inflamed and chop intensely.

Ampoules or granitos in exposed areas

Small packages, vesicles or even scabs may appear if there is excessive scratch.

Usual location in the body

Face, neckline, arms and hands. Covered areas are usually injured.

Duration and evolution of symptoms

The outbreaks usually last several days, even if you are no longer exposed to the sun.

Causes and Risk Factors

Intense or sudden exposure to the sun

The first exhibitions of the year usually cause outbreaks. The body needs time to adapt to UV radiation.

Use of certain medications or cosmetics

Antibotics, anti -inflammatories, diuretics and some perfumes or creams can produce photo allergic reactions.

Clear skin or family history

People with low phototype (clear skin, clear eyes) are more risk. The genetic predisposition also influences.

Progressive Sun Adaptation Deficit

Exposing abruptly to the sun, without the skin having gradually accustomed, facilitates the appearance of symptoms.

Sun allergy treatments

Topical creams and soothing lotions

Corticosteroids in cream or lotions with Aloe Vera and Calamina help reduce itching and inflammation.

Oral antihistamines

They are effective to relieve itching and limit the immune response. Always under medical prescription.

Medical phototherapy

In patients with recurring reactions, a controlled exposure to UV light can be performed to improve tolerance.

Other medical treatments in severe cases

Oral or immunosuppressive corticosteroids may be necessary in extreme situations.

Sun allergy prevention

Correct use of sunscreen

Choose a broad spectrum photoprotector (UVA+UVB), FPS 50+, water resistant and without perfumes. Reaplies every 2 hours.

Physical protection (clothes, hats, glasses)

The use of long garments, caps and sunglasses with UV filters is fundamental.

Habits to avoid excessive exposure

Avoid the sun between 12h and 4pm. Find shadow and alternate exposure with breaks in fresh places.

Dermatological control prior to summer

If you have already had outbreaks before, consult your dermatologist to establish a preventive plan.

Who does it affect more frequently?

People with clear or sensitive skin

Your skin produces less melanin, which makes it more vulnerable to UV rays.

Children and adolescents

They have immature and more reactive skin. In addition, they spend more time outdoors.

Patients who use photosensitive drugs

People with chronic treatments (acne, hypertension, infections) are at greater risk if they do not extreme caution.

Is sun allergy dangerous?

Complications if not treated

Although it is not a serious illness, if not controlled, it can limit daily life and cause secondary infections due to scratching.

Emotional impact and quality of life

Fear of sun or aesthetic rejection can generate anxiety, low self -esteem or social isolation.

Self -medication or continuous exposure risks

Not treating the background cause or still exposed without protection can aggravate the picture or make new allergies appear.

Sun allergy can be an annoying and limiting condition, but knowing its symptoms and acting on time allows you to control it effectively. If you experience discomfort after sun exposure, don’t ignore it. Check with your dermatologist in Viamed Salud to receive an adequate diagnosis and a personalized prevention plan. Your skin will thank you, and you can enjoy the Sun safely.