Any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues is known as /an disorder.

An autoimmune disorder.

Explanation:

Autoimmune disease are diseases by which one's own immune system mistakenly attacks healthy cells in the body.

Normally the immune system guards the body against germs like bacteria and viruses when it senses these foreign invasion, but in autoimmune disorders, the immune system abnormally attacks and destroys healthy tissues in the body by mistakenly identifying them as foreign.

Some examples of autoimmune disorders are; Rheumatoid arthritis, Lupus, Multiple sclerosis (MS), Inflammatory bowel disease (IBD). Etc.

autism affects an estimated 1 in 59 children. many people with sensory issues. these can include aversions to certain sights, sounds and other sensations.

tell their parents and make sure she gets from a counselor or therapist. be supportive and be there for her. be a kind and good friend. spend time with her to make her feel like she's not alone. i'm not a professional but i really hope they stays strong.