- macular degeneration [DOID:4448]
A retinal degeneration characterized by gradual deterioration of light-sensing cells in the tissues at the back of the eye and has_symptom vision loss.
- spindle cell lipoma [DOID:10184]
A lipoma that is an asymptomatic, slow-growing subcutaneous tumor that has a predilection for the posterior back, neck, and shoulders of older men.
- idiopathic juvenile osteoporosis [DOID:12559]
An osteoporosis with no known cause that is characterized by pain in the back and extremities, walking difficulties, multiple fractures, and radiological evidence of osteoporosis.
- lens disease [DOID:110]
An eye disease that affects the lens of the eye, which is the transparent disc that focuses light to the photosensors in the back of the eye.
- seminal vesicle acute gonorrhea [DOID:0050004]
A gonococcal seminal vesiculitis that is characterized by back pain, perineal pain, pain with ejaculation, hematospermia and voiding symptoms resulting from inflammation located_in the seminal vesicles caused by Neisseria gonorrhoeae infection.
- Brucella melitensis brucellosis [DOID:14456]
A brucellosis that involves an infection caused by Brucella melitensis [NCBITaxon:29459] in cattle, goats, sheep and humans. The disease has_symptom fever, has_symptom malaise, has_symptom anorexia, has_symptom limb pain and has_symptom back pain.
- laryngomalacia [DOID:0080833]
A laryngeal disease that is characterized by inward collapse of flaccid supraglottic structures during inspiration. The most common symptom is noisy breathing (stridor) that is often worse when the infant is on his/her back or crying.
- Aicardi syndrome [DOID:8461]
A syndrome that is characterized by absence or underdeveloped tissue connecting the left and right halves of the brain, infantile spasms and chorioretinal lacunae, which are defects in the light-sensitive tissue at the back of the eye.
- hyperopia [DOID:9834]
A refractive error that is characterized by rays of light entering the eye parallel to the optic axis are brought to a focus behind the retina, as a result of the eyeball being too short from front to back.
- sinusitis [DOID:0050127]
A paranasal sinus disease involving inflammation of the paranasal sinuses resulting from bacterial, fungal, viral infection, allergic or autoimmune issues. Symptoms can include fever, weakness, fatigue, cough and congestion. There may also be mucus drainage in the back of the throat, called postnasal drip.