Exogenous ochronosis
MONDO:0023094Exogenous ochronosis refers tothe bluish-black discoloration of certain tissues, such as the ear cartilage, the ocular (eye) tissue, and other body locations when it is due toexposure to various substances.It has been reported most commonly with topical application of hydroquinones to the skin. The discolorationmay becaused byan effect ontyrosinase(an enzyme located in melanocytes, which are skincells that produce pigment), or by inhibiting homogentisic acid oxidase, resulting in the accumulation and deposition of homogentisic acid (HGA) in cartilage. The discoloration is often permanent, but when exogenous ochronosis is caused by topical hydroquinones, carbon dioxide lasers and dermabrasion have been reported to be helpful. Exogenous ochronosis is different from hereditary ochronosis, which is an inherited condition that occurs with alkaptonuria.
Also known as: exogenous ochronosis, ochronosis, acquired, ocular ochronosis, pseudo-ochronosis
54 clinical trials for this condition and its sub-types.
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New pill aims to shield stomachs from common painkiller damage
Prevention Not yet recruitingThis study tests whether a new medicine called Fexuprazan (Fexuclue) can prevent stomach ulcers caused by NSAID painkillers like ibuprofen. About 360 adults with joint or muscle pain who need daily NSAIDs will take either Fexuprazan or an older drug (Lansoprazole) for 24 weeks. T…
Phase: PHASE4 • Sponsor: Daewoong Pharmaceutical Co. LTD. • Aim: Prevention
Last updated Jun 27, 2026 12:07 UTC
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Can your own blood and fat heal aching joints? new trial aims to find out
Symptom relief Not yet recruitingThis early-phase trial will test four orthobiologic treatments—PRP, bone marrow concentrate, hyaluronic acid, and nanofat—in 300 adults with various muscle, joint, tendon, or bone conditions. The goal is to see if these natural substances can reduce pain and improve joint functio…
Phase: EARLY_PHASE1 • Sponsor: PROREGEN • Aim: Symptom relief
Last updated Jun 27, 2026 09:08 UTC
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Phone app may boost exercise for aching joints
Symptom relief Not yet recruitingThis study looks at whether a mobile app can help people with common pains (neck, shoulder, back, or knee) do their prescribed home exercises more regularly. About 30 adults will be split into two groups: one using the app and one doing traditional exercises. The goal is to see i…
Phase: NA • Sponsor: National Yang Ming Chiao Tung University • Aim: Symptom relief
Last updated Jun 27, 2026 08:12 UTC
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New urdu tool could help millions with muscle and joint pain
Knowledge-focused Not yet recruitingThis study aims to translate and adapt a widely used questionnaire for musculoskeletal problems into Urdu. Researchers will enroll 110 Urdu-speaking adults, including patients with muscle or joint issues and healthy volunteers. The goal is to create a validated tool to measure sy…
Sponsor: Riphah International University • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:02 UTC
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AI vs. doctor: which note do patients trust more?
Knowledge-focused Not yet recruitingThis study looks at how patients feel when reading their own medical notes. Some will read the original doctor's note, others will read a simpler version written by artificial intelligence. Researchers want to see if the AI summary changes how much patients trust their doctor or …
Phase: NA • Sponsor: University of Texas at Austin • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:36 UTC
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New digital tool aims to speed up return to work for those with muscle pain
Knowledge-focused Not yet recruitingThis study tests a decision support system called SmaRTWork to help people on sick leave due to muscle or back pain return to work. About 298 adults in Norway will either use the system or receive usual care. The main goal is to see if the tool helps them return to work sustainab…
Phase: NA • Sponsor: Norwegian University of Science and Technology • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC
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Can a quick skin scan reveal hidden inflammation in arthritis?
Knowledge-focused Not yet recruitingThis study will measure harmful molecules called AGEs in 300 people with various rheumatic diseases (like rheumatoid arthritis and ankylosing spondylitis) and compare them to healthy volunteers. AGEs build up over time and can cause inflammation. Researchers will use a non-invasi…
Sponsor: Bursa City Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:10 UTC
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Massive diabetes registry aims to unlock secrets of metabolic disease
Knowledge-focused Not yet recruitingThis 10-year observational study will follow 10,000 adults with diabetes, metabolic disorders, and related conditions like high blood pressure and fatty liver disease. Researchers will collect routine medical data to identify markers of disease severity and activity. The goal is …
Sponsor: IRCCS San Raffaele • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:53 UTC