Solar urticaria is a rare skin disorder wherein, when one is exposed to the sun’s ultraviolet rays, urticaria or hives is triggered; and the rash appears on covered as well as uncovered areas of the skin.
Characteristically, areas that are not usually protected by clothing get affected; areas which are continuously subjected to the sun’s UV rays may only slightly be affected.
The condition is typified by constant itching and pain, since within a few minutes of exposure to UV radiation, hives appear. Initially, there will be itching, this is followed by redness and then swelling and edema.
In severe cases, along with these manifestations, there will also be dehydration; and headache, giddiness, nausea and vomiting.
In really rare cases, one may develop an anaphylactic reaction. Once the exposure to sun is stopped, hives tend to fade away within a few hours.
What Are The Causes Of Solar Urticaria?
The agent that is responsible for the reaction to the sun’s UV rays, known as the photo-allergen, has not yet been recognized.
Solar urticaria is an IgE mediated hypersensitivity disorder. Primary solar urticaria is type 1 hypersensitivity in which the substance that provokes the immune response is induced by the UV rays of the sun.
Secondary SU occurs when one comes in contact with chemicals such as dyes and tar. Dyes and tar cause photosensitivity; these are exogenous photosensitizers because they are outside the body and cause it to have a greater sensitivity to the UV sun rays.
It is still unclear what particular agent brings about the reaction to the UV rays. In a case study, when individuals known to have solar urticaria were given an irradiated autologous serum, quite a few showed hives and rashes in the area that was injected with the serum. When those who did not have solar urticaria were injected, they did not show any symptoms.
Consequently, experts hypothesize that is possible that this photo-allergen is situated on the binding sites of IgE that are found on the surface of the mast cells. Research says that the photo-allergen starts its formation via the absorption of radiation by a chromophore. The molecule, due to the radiation, gets converted resulting in the formation of a new photo-allergen.
Homeopathic Remedies For Solar Urticaria
- Apis mellifica: Apis mellifica is an excellent homeopathy drug for solar urticarial. Apis promises to reduce the redness and swelling almost immediately. The welts and the rash start disappearing in a couple of minutes; however, the drug needs to be taken very frequently to have rapid results.
- Sulphur: Sulphur is a wonderful solar urticaria remedy. The drug quickly acts on the epidermis and dermis and banishes itching and discomfort. It will prevent the occurrence of redness and edema if taken promptly.
- Cantharis: Low potency of Cantharis is equally effective to handle itching, redness, burning and pain associated with solar urticaria.
Homeopathy is a safe and decidedly effectual system of medicine, which helps a host of skin ailments, especially solar urticaria. You may safely try these drugs for beneficial effects. Also, it would be a good idea to confer with a dermatologist as well as a homeopathy practitioner to get a perspective on your case.