is a disorder of abnormal bone breakdown and rebuilding (remodeling).

is excessive bone breakdown (osteolysis), causing weak bones and fractures.

is a bone cancer causing pain, swelling, and sometimes fractures.

is a rare cancer where squamous cells grow within bone, often metastatic.

is a condition affecting bone shape, strength, and growth.

is a rare genetic disorder affecting development and multiple body systems.

is a rare genetic disorder affecting development and overall health.

is a rare genetic bone disorder causing severe, usually fatal deformities.

is a genetic condition causing hearing loss and kidney and neck abnormalities.

involves borderline eye pressure (intraocular pressure) or nerve changes, raising glaucoma risk.

is a Hansen’s disease subtype with patchy skin lesions and nerve involvement.

is a mental health condition with unstable moods, relationships, and self-image.

is a contagious respiratory infection causing prolonged coughing fits, usually milder.

is a rare genetic condition affecting development, learning, and physical features.

is a rare viral infection causing brain inflammation, mostly in animals.

is a rare viral brain inflammation causing fever, confusion, seizures; sometimes life-threatening.

is an early-stage skin cancer limited to the epidermis, treatable.

is a rare genetic disorder affecting eye movements, hearing, and brainstem development.

is a rare inherited eye disease causing night blindness and vision loss.

is an inherited skin condition causing thick, sometimes painful palms and soles.

is a rare childhood cancer of muscle-like cells in mucosal organs.

is a rare, life-threatening illness from botulinum toxin causing nerve paralysis.

is a tick-borne infection causing fever, headache, rash, and eschar (black scab).

involves problems with bowel movements, like constipation, diarrhea, or incontinence.