photosensitivity: Everything you need to know about Sun Allergy

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Chapters

0:00 Introduction
0:44 Types of Photosensitivity
1:53 Symptoms of Photosensitivity
2:32 Causes of Photosensitivity
3:20 Treatment of Photosensitivity

Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light. In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity.[1][2] The photosensitive ganglion cells in the mammalian eye are a separate class of light-detecting cells from the photoreceptor cells that function in vision. Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light. In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity.[1][2] The photosensitive ganglion cells in the mammalian eye are a separate class of light-detecting cells from the photoreceptor cells that function in vision. Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light. In medicine, the term is principally used for abnormal reactions of the skin, and two types are distinguished, photoallergy and phototoxicity.[1][2] The photosensitive ganglion cells in the mammalian eye are a separate class of light-detecting cells from the photoreceptor cells that function in vision.

Sensitivity of the skin to a light source can take various forms. People with particular skin types are more sensitive to sunburn. Particular medications make the skin more sensitive to sunlight; these include most of the tetracycline antibiotics, heart drugs amiodarone, and sulfonamides. Some dietary supplements, such as St. John's Wort, include photosensitivity as a possible side effect.

Particular conditions lead to increased light sensitivity. Patients with systemic lupus erythematosus experience skin symptoms after sunlight exposure; some types of porphyria are aggravated by sunlight. A rare hereditary condition xeroderma pigmentosum (a defect in DNA repair) is thought to increase the risk of UV-light-exposure-related cancer by increasing photosensitivity.
Veterinary medicine
Main article: Photosensitivity in animals

Photosensitivity occurs in multiple species including sheep, bovine, and horses. They are classified as primary if an ingested plant contains a photosensitive substance, like hypericin in St John's wort poisoning and ingestion of biserrula (Biserrula pelecinus)[3] in sheep, or buckwheat plants (green or dried) in horses.[4]

In hepatogenous photosensitization, the photosensitzing substance is phylloerythrin, a normal end-product of chlorophyll metabolism. [5] It accumulates in the body because of liver damage, reacts with UV light on the skin, and leads to free radical formation. These free radicals damage the skin, leading to ulceration, necrosis, and sloughing. Non-pigmented skin is most commonly affected.

[masterrichie]

I’m the only freak in this family who is photo-allergic and stays away from the sun’s rays! I sometimes forget they’re others like me.

[Flying_Jess_ca]

It is so painful… I have to scratch my arms all day in summer. . .😢

[taez]

The sun burnt my foot .everyone thinks im lying but im not .i was standing directly in the sun for a good 5to 10 minutes.i came in my house were it was cold .my foot started to itch i thought it was a bug bite but hunny when i rubbed my foot the skin cane off .im sure the sun did it 😮

[shararatiIJK]

I am so happy to watch this video. It really gave me correct and enough information. I could understand what types of allergies n skin conditions happen to our body. Doctors never give a correct and complete picture. Thank you. God bless u all.

[thecommunityofnewknowledge]

Prime Example to who is really natural to this planet and who are visitors here

[happymunchkin]

I have to wear long sleeve shirts when I’m outside and it doesn’t matter how long I been out. I’m very sensitive to the sun after I hits menopause and feels like ants crawl over my body and cause me to scratch. 😢😢

[xfactorchick]

I am photo sensitive. I burn even with sun factor 100. I have to be super careful. My photo sensitivity is really bad.

[itsrtvbaby]

This is now getting even worse because the magnetosphere is reaching a weak point due to the magnetic North pole moving towards the 40 degree mark, and because of increased Solar flares and CmE's from the Sun hitting the ground in the form of UV radiation.

[daniellerandall]

Love this video straight to the point easy to understand.

[sajaldutta]

You have not mentioned any medical treatment for sunburn allergy.

[MrRdvs]

How much of a role does complexion play here? I’ve got 10 days off and want to get in the pool but now I have to take this medication. If complexion and sunblock won’t save me, I did notice that the bit about covering skin would so, I’ll buy a few long sleeve under armor shirts for the pool.

[sunnylove]

I can't be in the sun long it itches and burns

[wistletone]

I get hives in the sun. It started about 5 years ago. It’s awful. But when it happens allergy pills like Claritin help prevent/reduce it. I cover up and wear the highest sunblock. I’m trying Astaxanthin - to build sunblock from the inside out. Hoping it will help.

[MatoMarek]

I've photosenstivity caused by medication. On Sunny days I get Burned even if I use SPF 50.

[shrutichaudhari]

I have the same condition. I have to cover my whole body. I got one question tho can I go out at night at least?? Please let me know

[ctznx]

I wasn’t till
I took
Certain antibiotics and
Now I’m fucked

[allyjay]

I'm polymorphic whatever and i hate my life