When symptoms of amyotrophic lateral sclerosis (ALS), such as weakness and a loss of muscle mass, start in the limbs, doctors refer to the condition as limb onset ALS. ALS is a progressive condition ...

Alzheimer’s disease develops when neurons (nerve cells) in the brain stop functioning, lose connections with other neurons, and eventually die. Although Alzheimer’s dementia typically affects people ...

Early onset Alzheimer’s disease is a variant of Alzheimer’s disease that begins to cause symptoms when people are in their 40s and 50s. Symptoms include memory loss, difficulty completing familiar ...

Bulbar onset ALS is a type of amyotrophic lateral sclerosis (ALS) that occurs due to the loss of motor neurons in the bulbar region of the brainstem. This progressive condition affects speech, ...

Although various names have referred to it, the phenomenon of gender dysphoria has been well-studied for over a century. Gender dysphoria occurs when a person's biological sex doesn’t match their ...