answersLogoWhite

0

What are psoralens?

User Avatar

GaleEncyofMedicine

Lvl 1
14y ago
Updated: 8/19/2019

Psoralens are photosensitizing agents found in plants.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

What affect do psoralens have on psoriasis?

When they are combined with exposure to UVA in PUVA, they are highly effective at clearing psoriasis.


Bergamot oil does it works for vitiligo?

Bergamot oil is found helpful in treating vitiligo. It contains psoralens which acts as a photosensitizer and makes our skin sensitive to the tanning effect of sunlight which helps in repigmentation. http://www.vitiligoguide.com/vitiligo-videos/psoralens-vitiligo-treatment-video/


Is lemon poisonous for horses?

yes because of its essential oils and psoralens , if you do then the symptoms of poisoning is diarrhoea, depression, vomiting, occasional photosensitivity so to prevent this , remove the horse from plant and do not let it eat it .


What are some nine letter words with 1st letter P and 3rd letter O and 6th letter L and 9th letter S?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern P-O--L--S. That is, nine letter words with 1st letter P and 3rd letter O and 6th letter L and 9th letter S. In alphabetical order, they are: profilers promulges proofless propylons psoraleas psoralens


What are some nine letter words with 1st letter P and 4th letter R and 7th letter E and 9th letter S?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 9 words with the pattern P--R--E-S. That is, nine letter words with 1st letter P and 4th letter R and 7th letter E and 9th letter S. In alphabetical order, they are: parrokets parroters patroness peartness petronels pharisees psoraleas psoralens pyorrheas


Who discoverd vitiligo?

Three myths about the treatment of vitiligo prevail in the medical profession. The first myth is that treatment of vitiligo is "impossible." This is clearly not true and the majority of patients can achieve good results. The second myth is that oral psoralens, which form the basis for some vitiligo treatments are "toxic to the liver." Oral psoralens are not toxic to the liver. The third myth is that psoralen + UVA (PUVA) treatments for vitiligo "cause cancer of the skin." When used to treat vitiligo, PUVA therapy requires only a limited number of treatments-approximately 150 in number that has not been shown to cause skin cancer. By comparison, PUVA treatments for psoriasis can be as many as double the number for vitiligo. It has been shown that a small percentage of patients who receive more than 250 PUVA treatments can develop treatable squamous cell cancers of the skin.


What are some nine letter words with 1st letter P and 3rd letter O and 6th letter L?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 24 words with the pattern P-O--L---. That is, nine letter words with 1st letter P and 3rd letter O and 6th letter L. In alphabetical order, they are: phonolite phonology photolyse photolyze profilers profiling profilist promulged promulges proofless propaling propelled propeller propellor propulsor propylaea propylene propylite propylons proselike proselyte provolone psoraleas psoralens


What are some nine letter words with 3rd letter O and 5th letter A and 8th letter N?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 30 words with the pattern --O-A--N-. That is, nine letter words with 3rd letter O and 5th letter A and 8th letter N. In alphabetical order, they are: bioparent brocading bromating clozapine coolamons crotaline evocating hoorahing hooraying isolating neopagans ozonating phonating probating profaning prolamine prolamins prolating pronating propaging propaling propanone prorating protamine protamins psoralens rhodamine rhodamins rhoeadine violating


What are some nine letter words with 1st letter P and 3rd letter O and 8th letter N?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 51 words with the pattern P-O----N-. That is, nine letter words with 1st letter P and 3rd letter O and 8th letter N. In alphabetical order, they are: phonating phoneying phosphene phosphine phosphins photogene photogens photogeny ploughing probating procident procreant procuring producing profaning profiling profiting profluent proigning prolamine prolamins prolating prologing prominent promising promoting prompting pronating propaging propaling propanone propining proponent proponing proposing propylene propylons prorating prosopons prosterna protamine protamins protogine protogyny provident providing provining provocant provoking provolone psoralens


You are a 50 year old black woman with brown skin you have these light spots on your lower legs that started showing up about 15 years ago but are now multiplying slowly but surely and some seem to ha?

It sounds like you have Vitiligo. This can happen in Caucasians (my brother-in-law has it) but it's devastating to black people. Here is some information I have found and I have left you a website to go too: by Thomas B. Fitzpatrick, MD , Ph.D Three myths about the treatment of vitiligo prevail in the medical profession. The first myth is that treatment of vitiligo is "impossible." This is clearly not true and the majority of patients can achieve good results. The second myth is that oral psoralens, which form the basis for some vitiligo treatments are "toxic to the liver." Oral psoralens are not toxic to the liver. The third myth is that psoralen + UVA (PUVA) treatments for vitiligo "cause cancer of the skin." When used to treat vitiligo, PUVA therapy requires only a limited number of treatments-approximately 150 in number that has not been shown to cause skin cancer. By comparison, PUVA treatments for psoriasis can be as many as double the number for vitiligo. It has been shown that a small percentage of patients who receive more than 250 PUVA treatments can develop treatable squamous cell cancers of the skin. Four options are currently available for the treatment of vitiligo: sunscreens; cover-up; restoration of normal skin color; and bleaching of normal skin with topical creams to remove normal skin pigment to make an even color. The two goals of sunscreen treatments are: to protect unpigmented involved skin from sunburn reaction and to limit the tanning of normal pigmented skin. The sun protection factor (SPF) of sunscreens should be no less than SPF 30, as this grade blocks not only erythema, but also the affects of sunlight on the DNA of the skin cells. Sunscreen treatment skin phototypes 1, 2, and sometimes 3 (those who burn, then tan to some degree). The goal of cover-up with dyes or make-up is to hide the white macules so that the vitiligo is less visible. Self-tanning lotions and camouflage are quite helpful for some patients. Restoration of normal skin color can take the form of spot treatments or whole body treatment. Initial treatment with certain topical corticosteroid creams is practical, simple, and safe. If there is no response in 2 months, it is unlikely to be effective. Physician monitoring every 2 months for signs of early steroid atrophy (thinning of the skin) is required. Much more complicated is the use of topical Oxsoralen (8-MOP). Oxsoralen is highly phototoxic (likely to cause a sunburn), and the phototoxicity lasts for 3 days or more. This should be performed only as an office procedure, only for small spots, and only by experienced physicians on well-informed patients. As with oral psoralens, 15 or more treatments may be required to initiate a response, and 100 or more to finish. Mini grafting, which involves transplanting the patient's normal skin to vitiligo affected areas, may be a useful technique for refractory segmental vitiligo macules. PUVA may be required following the procedure to unify the color between the graft sites. The demonstrated occurrence of Koebnerization in donor sites in generalized vitiligo restricts this procedure to patients who have limited skin areas at risk for vitiligo. "Pebbling" of grafted site may occur. For more widespread vitiligo, treatment with oral psoralen + UVA (PUVA) is practical. This may be done with sunlight and trimethylpsoralen (Trisoralen) or with artificial UVA (in the doctor's office or at an approved phototherapy facility) and Trisoralen or Oxsoralen-Ultra.Ophthalmologic examination and ANA blood tests are required before starting PUVA therapy. Outdoor therapy may be initiated with 0.6 mg/kg Trisoralen followed 2 hours later by 5 minutes of New England sunlight (less in southern regions). Treatments should be twice weekly, not 2 days in a row, and sunlight exposure should increase by 3 to 5 minutes per treatment until there is a sign of response, and in a few this causes koebnerization. Individualization is required: treatment options are either 0.4 mg/kg of Oxsoralen-Ultra (well absorbed, efficient potentially very phototoxic, significant risk of nausea) or 0.6 mg/kg of Trisoralen (variably absorbed, not very phototoxic, little nausea).Initial UVA exposure should be 1.0 J and increments (twice weekly, not two days in a row) 0.5 (Oxsoralen-Ultra) to 1.0 (Trisoralen) J per treatment until there is evidence of response of phototoxicity. The later is the sustaining UVA dose until reasonable repigmentation has been established.PUVA is up to 85% effective in over 70% of patients with vitiligo of the head, neck, upper arms, legs, and trunk. Distal hands and feet are poorly responsive and alone are not usually worth treating. Genital areas should be shielded and not treated. Macules that have totally repigmented usually stay in the absence of injury/sunburn (85% likelihood up to 10 years), macules less than fully repigmented will slowly reverse once treatments have been discontinued. Maintenance treatments are required.Risks of treating vitiligo with PUVA include nausea, GI upset, sunburn, hyperpigmentation, and acute dryness. We advise against oral PUVA treatments for children under age 10. Treatment is most likely to be successful in highly motivated patients who clearly have reasonable objectives and understand the risks and benefits. While PUVA is not a cure, most patients who are responding well to treatment are not at the same time developing new vitiligo macules. www.avrf.org/treatments/treatments.htm I wish you good luck & God Bless


How do you make skin colour?

Your skin colour is affected by the amount of melanin in your skin, the brown pigment protects deeper tissues from harmful ultraviolet rays. Exposing yourself to higher levels of UV radiation causes your skin to produce more melanin to protect you. Too much UV harms your body tissues and can kill you (cancer). The level of pigment can be changed artificially through cosmetic surgery.


What does sun poisoning look like?

Sun poisoning occurs after extreme exposure to the sun. It is most commonly diagnosed by the bright red skin that is accompanied by blistering. It is wise to always put sun block in before going out doors. +++ It is not really "poisoning". The damage to the skin is a burn. The "illness" is sunstroke - the effect of heat and dehydration. Poisoning is a chemical attack on the body. It is even wiser to cover up before venturing out into the hottest time of day, with light, loosely-fitting clothing, and in fact to avoid the sun at its most intense if at all possible. Also drink plenty of water or fruit-juice, and reduce or avoid alcohol and coffee as they are both diuretics. So is tea, though slightly less so unless you quaff big mugs of "builders' tea"!