136 relations: Acne, Actinic keratosis, Advanced sleep phase disorder, American Cancer Society, Ancient Egypt, Ancient Greece, Ancient Rome, Antibiotic, Anxiety disorder, Assyria, Atopic dermatitis, Bacteria, Bili light, Biliblanket, Bilirubin, Bipolar disorder, Blood irradiation therapy, Buddhist texts, Cataract, Chloroquine, Chromotherapy, Chronic wound, Circadian rhythm, Circadian rhythm sleep disorder, Clinical trial, Cochrane (organisation), Collagen, Cone cell, Contraindication, Cosmetics, Cutaneous condition, Cutaneous T cell lymphoma, Dawn simulation, Daylight, Deity, Delayed sleep phase disorder, Dermatitis, Diabetic retinopathy, Dichroism, Dora Colebrook, Electromagnetic spectrum, Erythema, Estradiol, Faroe Islanders, Fluorescent lamp, Follicle-stimulating hormone, Free-running sleep, Full-spectrum light, Germans, Glare (vision), ..., Headache, Herb, Hormone, Human hair growth, Human skin, Hypericum perforatum, Immune system, Inca Empire, Indoor tanning, Inflammation, Infrared, Intrinsically photosensitive retinal ganglion cells, Isomerization, Jet lag, Laser, Laser medicine, Lichen planus, Light, Light meter, Light therapy, Light-emitting diode, Lighting, Low-level laser therapy, Lupus vulgaris, Luteinizing hormone, Lux, Major depressive disorder, Mania, McGill University, Melatonin, Mental disorder, Methodology, Methotrexate, Mutation, Mycobacterium tuberculosis, Nadir, Nanometre, Narrowband, Nausea, Neonatal jaundice, Niels Ryberg Finsen, Nobel Prize in Physiology or Medicine, Non-24-hour sleep–wake disorder, Optical radiation, Osler Library of the History of Medicine, Pain management, Phase response curve, Photodynamic therapy, Photokeratitis, Photosensitivity, Phototoxicity, Physician, Polarization (waves), Polychrome, Polymorphous light eruption, Porphyria, Postpartum depression, Psoralen, Psoriasis, PUVA therapy, Radical (chemistry), Reactive oxygen species, Red, Retina, Seasonal affective disorder, Serotonin, Shift work sleep disorder, Side effect, Skin cancer, Sleep disorder, Smallpox, Sun tanning, Sunlight, Surgical suture, Swedish Agency for Health Technology Assessment and Assessment of Social Services, Systematic review, Testosterone, Tuberculosis, Ultraviolet, UV-B lamps, Visible spectrum, Vitamin A, Vitamin C, Vitiligo, WebMD, Wound healing. Expand index (86 more) » « Shrink index
Acne, also known as acne vulgaris, is a long-term skin disease that occurs when hair follicles are clogged with dead skin cells and oil from the skin.
Actinic keratosis (AK) is a pre-cancerous patch of thick, scaly, or crusty skin.
Advanced sleep phase disorder (ASPD), also known as the advanced sleep-phase type (ASPT) of circadian rhythm sleep disorder or advanced sleep phase syndrome (ASPS), is a condition in which patients feel very sleepy and go to bed early in the evening (e.g. 6:00–8:00 p.m.) and wake up very early in the morning (e.g. around 3:00 a.m.).
The American Cancer Society (ACS) is a nationwide voluntary health organization dedicated to eliminating cancer.
Ancient Egypt was a civilization of ancient Northeastern Africa, concentrated along the lower reaches of the Nile River - geographically Lower Egypt and Upper Egypt, in the place that is now occupied by the countries of Egypt and Sudan.
Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 13th–9th centuries BC to the end of antiquity (AD 600).
In historiography, ancient Rome is Roman civilization from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD, encompassing the Roman Kingdom, Roman Republic and Roman Empire until the fall of the western empire.
An antibiotic (from ancient Greek αντιβιοτικά, antibiotiká), also called an antibacterial, is a type of antimicrobial drug used in the treatment and prevention of bacterial infections.
Anxiety disorders are a group of mental disorders characterized by significant feelings of anxiety and fear.
Assyria, also called the Assyrian Empire, was a major Semitic speaking Mesopotamian kingdom and empire of the ancient Near East and the Levant.
Atopic dermatitis (AD), also known as atopic eczema, is a type of inflammation of the skin (dermatitis).
Bacteria (common noun bacteria, singular bacterium) is a type of biological cell.
A bili light is a light therapy tool to treat newborn jaundice (hyperbilirubinemia).
A biliblanket is a portable phototherapy device for the treatment of neonatal jaundice (hyperbilirubinemia).
Bilirubin is a yellow compound that occurs in the normal catabolic pathway that breaks down heme in vertebrates.
Bipolar disorder, previously known as manic depression, is a mental disorder that causes periods of depression and periods of abnormally elevated mood.
Blood irradiation therapy is a procedure in which the blood is exposed to low level red light (often laser light) for therapeutic reasons.
Buddhist texts were initially passed on orally by monks, but were later written down and composed as manuscripts in various Indo-Aryan languages which were then translated into other local languages as Buddhism spread.
A cataract is a clouding of the lens in the eye which leads to a decrease in vision.
Chloroquine is a medication used to prevent and to treat malaria in areas where malaria is known to be sensitive to its effects.
Chromotherapy, sometimes called color therapy, colorology or cromatherapy, is an alternative medicine method, which is considered pseudoscience.
A chronic wound is a wound that does not heal in an orderly set of stages and in a predictable amount of time the way most wounds do; wounds that do not heal within three months are often considered chronic.
A circadian rhythm is any biological process that displays an endogenous, entrainable oscillation of about 24 hours.
Circadian rhythm sleep disorders (CRSD) are a family of sleep disorders affecting (among other bodily processes) the timing of sleep.
Clinical trials are experiments or observations done in clinical research.
Cochrane is a non-profit, non-governmental organization formed to organize medical research findings so as to facilitate evidence-based choices about health interventions faced by health professionals, patients, and policy makers.
Collagen is the main structural protein in the extracellular space in the various connective tissues in animal bodies.
Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye).
In medicine, a contraindication is a condition or factor that serves as a reason to withhold a certain medical treatment due to the harm that it would cause the patient.
Cosmetics are substances or products used to enhance or alter the appearance of the face or fragrance and texture of the body.
A cutaneous condition is any medical condition that affects the integumentary system—the organ system that encloses the body and includes skin, hair, nails, and related muscle and glands.
Cutaneous T cell lymphoma (CTCL) is a class of non-Hodgkin lymphoma, which is a type of cancer of the immune system.
Dawn simulation is a technique that involves timing lights, often called wake up lights, sunrise alarm clock or natural light alarm clocks, in the bedroom to come on gradually, over a period of 30 minutes to 2 hours, before awakening.
Daylight, or the light of day, is the combination of all direct and indirect sunlight during the daytime.
A deity is a supernatural being considered divine or sacred.
Delayed sleep phase disorder (DSPD), more often known as delayed sleep phase syndrome and also as delayed sleep-wake phase disorder, is a chronic dysregulation of a person's circadian rhythm (biological clock), compared to those of the general population and societal norms.
Dermatitis, also known as eczema, is a group of diseases that results in inflammation of the skin.
Diabetic retinopathy, also known as diabetic eye disease, is a medical condition in which damage occurs to the retina due to diabetes mellitus.
In optics, a dichroic material is either one which causes visible light to be split up into distinct beams of different wavelengths (colours) (not to be confused with dispersion), or one in which light rays having different polarizations are absorbed by different amounts.
Dora Challis Colebrook (1884-1965) was a doctor and bacteriologist.
The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies.
Erythema (from the Greek erythros, meaning red) is redness of the skin or mucous membranes, caused by hyperemia (increased blood flow) in superficial capillaries.
Estradiol (E2), also spelled oestradiol, is an estrogen steroid hormone and the major female sex hormone.
Faroese people (føroyingar) are an ethnic group and nation native to the Faroe Islands.
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.
Follicle-stimulating hormone (FSH) is a gonadotropin, a glycoprotein polypeptide hormone.
Free-running sleep is a sleep pattern that is not adjusted (entrained) to the 24-hour cycle in nature nor to any artificial cycle.
Full-spectrum light is light that covers the electromagnetic spectrum from infrared to near-ultraviolet, or all wavelengths that are useful to plant or animal life; in particular, sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth changes with time of day, latitude, and atmospheric conditions.
Germans (Deutsche) are a Germanic ethnic group native to Central Europe, who share a common German ancestry, culture and history.
Glare is difficulty seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night.
Headache is the symptom of pain anywhere in the region of the head or neck.
In general use, herbs are plants with savory or aromatic properties that are used for flavoring and garnishing food, in medicine, or as fragrances.
A hormone (from the Greek participle “ὁρμῶ”, "to set in motion, urge on") is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.
The growth of human hair occurs everywhere on the body except for the soles of the feet, the lips, palms of the hands, some external genital areas, the navel, scar tissue, and, apart from eyelashes, the eyelids.
The human skin is the outer covering of the body.
Hypericum perforatum, known as perforate St John's-wort, common Saint John's wort and St John's wort, is a flowering plant in the family Hypericaceae.
The immune system is a host defense system comprising many biological structures and processes within an organism that protects against disease.
The Inca Empire (Quechua: Tawantinsuyu, "The Four Regions"), also known as the Incan Empire and the Inka Empire, was the largest empire in pre-Columbian America, and possibly the largest empire in the world in the early 16th century.
Indoor tanning involves using a device that emits ultraviolet radiation to produce a cosmetic tan.
Inflammation (from inflammatio) is part of the complex biological response of body tissues to harmful stimuli, such as pathogens, damaged cells, or irritants, and is a protective response involving immune cells, blood vessels, and molecular mediators.
Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.
Intrinsically photosensitive retinal ganglion cells (ipRGCs), also called photosensitive retinal ganglion cells (pRGC), or melanopsin-containing retinal ganglion cells (mRGCs), are a type of neuron in the retina of the mammalian eye.
In chemistry isomerization (also isomerisation) is the process by which one molecule is transformed into another molecule which has exactly the same atoms, but the atoms have a different arrangement e.g. A-B-C → B-A-C (these related molecules are known as isomers). In some molecules and under some conditions, isomerization occurs spontaneously.
Jet lag is a physiological condition which results from alterations to the body's circadian rhythms caused by rapid long-distance trans-meridian (east–west or west–east) travel.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
Laser medicine consists in the use of lasers in medical diagnosis, treatments, or therapies, such as laser photodynamic therapy.
Lichen planus (LP) is a disease characterized by itchy reddish-purple polygon-shaped skin lesions on the lower back, wrists, and ankles.
Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.
A light meter is a device used to measure the amount of light.
Light therapy—or phototherapy, classically referred to as heliotherapy—consists of exposure to daylight or to specific wavelengths of light using polychromatic polarised light, lasers, light-emitting diodes, fluorescent lamps, dichroic lamps or very bright, full-spectrum light.
A light-emitting diode (LED) is a two-lead semiconductor light source.
Lighting or illumination is the deliberate use of light to achieve a practical or aesthetic effect.
Low-level laser therapy (LLLT) is a form of alternative medicine that applies low-level (low-power) lasers or light-emitting diodes (LEDs) to the surface of or in orifices of the body.
Lupus vulgaris (also known as tuberculosis luposa) are painful cutaneous tuberculosis skin lesions with nodular appearance, most often on the face around the nose, eyelids, lips, cheeks, ears and neck.
Luteinizing hormone (LH, also known as lutropin and sometimes lutrophin) is a hormone produced by gonadotropic cells in the anterior pituitary gland.
The lux (symbol: lx) is the SI derived unit of illuminance and luminous emittance, measuring luminous flux per unit area.
Major depressive disorder (MDD), also known simply as depression, is a mental disorder characterized by at least two weeks of low mood that is present across most situations.
Mania, also known as manic syndrome, is a state of abnormally elevated arousal, affect, and energy level, or "a state of heightened overall activation with enhanced affective expression together with lability of affect." Although mania is often conceived as a "mirror image" to depression, the heightened mood can be either euphoric or irritable; indeed, as the mania intensifies, irritability can be more pronounced and result in violence, or anxiety.
McGill University is a public research university in Montreal, Quebec, Canada.
Melatonin, also known as N-acetyl-5-methoxy tryptamine, is a hormone that is produced by the pineal gland in animals and regulates sleep and wakefulness.
A mental disorder, also called a mental illness or psychiatric disorder, is a behavioral or mental pattern that causes significant distress or impairment of personal functioning.
Methodology is the systematic, theoretical analysis of the methods applied to a field of study.
Methotrexate (MTX), formerly known as amethopterin, is a chemotherapy agent and immune system suppressant.
In biology, a mutation is the permanent alteration of the nucleotide sequence of the genome of an organism, virus, or extrachromosomal DNA or other genetic elements.
Mycobacterium tuberculosis is a species of pathogenic bacteria in the family Mycobacteriaceae and the causative agent of tuberculosis.
The nadir (from نظير / ALA-LC: naẓīr, meaning "counterpart") is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there.
The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).
In radio, narrowband describes a channel in which the bandwidth of the message does not significantly exceed the channel's coherence bandwidth.
Nausea or queasiness is an unpleasant sense of unease, discomfort, and revulsion towards food.
Neonatal jaundice is a yellowish discoloration of the white part of the eyes and skin in a newborn baby due to high bilirubin levels.
Niels Ryberg Finsen (15 December 1860 – 24 September 1904) was a Danish physician and scientist of Icelandic descent.
The Nobel Prize in Physiology or Medicine (Nobelpriset i fysiologi eller medicin), administered by the Nobel Foundation, is awarded once a year for outstanding discoveries in the fields of life sciences and medicine.
Non-24-hour sleep–wake disorder (non-24), is one of several chronic circadian rhythm sleep disorders (CRSDs).
Optical radiation is part of the electromagnetic spectrum.
The Osler Library, a branch of the McGill University Library, is Canada's foremost scholarly resource in the history of medicine, and one of the most important libraries of its type in North America.
Pain management, pain medicine, pain control or algiatry, is a branch of medicine employing an interdisciplinary approach for easing the suffering and improving the quality of life of those living with chronic pain The typical pain management team includes medical practitioners, pharmacists, clinical psychologists, physiotherapists, occupational therapists, physician assistants, nurses.
A phase response curve (PRC) illustrates the transient change in the cycle period of an oscillation induced by a perturbation as a function of the phase at which it is received.
Photodynamic therapy (PDT), sometimes called photochemotherapy, is a form of phototherapy involving light and a photosensitizing chemical substance, used in conjunction with molecular oxygen to elicit cell death (phototoxicity).
Photokeratitis or ultraviolet keratitis is a painful eye condition caused by exposure of insufficiently protected eyes to the ultraviolet (UV) rays from either natural (e.g. intense sunlight) or artificial (e.g. the electric arc during welding) sources.
Photosensitivity is the amount to which an object reacts upon receiving photons, especially visible light.
Phototoxicity, also called photoirritation, is a chemically induced skin irritation, requiring light, that does not involve the immune system.
A physician, medical practitioner, medical doctor, or simply doctor is a professional who practises medicine, which is concerned with promoting, maintaining, or restoring health through the study, diagnosis, and treatment of disease, injury, and other physical and mental impairments.
Polarization (also polarisation) is a property applying to transverse waves that specifies the geometrical orientation of the oscillations.
Polychrome is the "'practice of decorating architectural elements, sculpture, etc., in a variety of colors." The term is used to refer to certain styles of architecture, pottery or sculpture in multiple colors.
Polymorphous light eruption (PLE), sometimes also called polymorphic light eruption (PMLE), is a non-life-threatening and potentially distressing skin condition that is triggered by sunlight and artificial (UV exposure) in a genetically susceptible person, particularly in temperate climates during the spring and early summer.
Porphyria is a group of diseases in which substances called porphyrins build up, negatively affecting the skin or nervous system.
Postpartum depression (PPD), also called postnatal depression, is a type of mood disorder associated with childbirth, which can affect both sexes.
Psoralen (also called psoralene) is the parent compound in a family of natural products known as furocoumarins.
Psoriasis is a long-lasting autoimmune disease characterized by patches of abnormal skin.
PUVA (psoralen and ultraviolet A) is an ultraviolet light therapy treatment for eczema, psoriasis, graft-versus-host disease, vitiligo, mycosis fungoides, large-plaque parapsoriasis and cutaneous T-cell lymphoma using the sensitizing effects of the drug psoralen.
In chemistry, a radical (more precisely, a free radical) is an atom, molecule, or ion that has an unpaired valence electron.
Reactive oxygen species (ROS) are chemically reactive chemical species containing oxygen.
Red is the color at the end of the visible spectrum of light, next to orange and opposite violet.
The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.
Seasonal affective disorder (SAD) is a mood disorder subset in which people who have normal mental health throughout most of the year exhibit depressive symptoms at the same time each year, most commonly in the winter.
Serotonin or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter.
Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia and excessive sleepiness affecting people whose work hours overlap with the typical sleep period.
In medicine, a side effect is an effect, whether therapeutic or adverse, that is secondary to the one intended; although the term is predominantly employed to describe adverse effects, it can also apply to beneficial, but unintended, consequences of the use of a drug.
Skin cancers are cancers that arise from the skin.
A sleep disorder, or somnipathy, is a medical disorder of the sleep patterns of a person or animal.
Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor.
Sun tanning or simply tanning is the process whereby skin color is darkened or tanned.
Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light.
Surgical suture is a medical device used to hold body tissues together after an injury or surgery.
The Swedish Agency for Health Technology Assessment and Assessment of Social Services (SBU – Statens beredning för medicinsk och social utvärdering in Swedish) previously the Swedish Council on Health Technology Assessment is an independent Swedish governmental agency tasked with assessing and evaluating methods in use in healthcare och social services.
Systematic reviews are a type of literature review that uses systematic methods to collect secondary data, critically appraise research studies, and synthesize studies.
Testosterone is the primary male sex hormone and an anabolic steroid.
Tuberculosis (TB) is an infectious disease usually caused by the bacterium Mycobacterium tuberculosis (MTB).
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
UV-B lamps are lamps that emit a spectrum of ultraviolet light with wavelengths ranging from 290–320 nanometers.
The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye.
Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene).
Vitamin C, also known as ascorbic acid and L-ascorbic acid, is a vitamin found in food and used as a dietary supplement.
Vitiligo is a long-term skin condition characterized by patches of the skin losing their pigment.
WebMD is an American corporation known primarily as an online publisher of news and information pertaining to human health and well-being.
Wound healing is an intricate process in which the skin repairs itself after injury.
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