Context: Other immune system disorders include various hypersensitivities (such as in asthma and other allergies) that respond inappropriately to otherwise harmless compounds.

Question: What is a type of immune system disorder?
Answer: hypersensitivities

Question: What are some examples of hypersensitivities?
Answer: asthma and other allergies

Question: What characterizes a hypersensitivity?
Answer: respond inappropriately to otherwise harmless compounds.