Allergies

4 clues
Sneezin' reasons
Immunology concerns
Reasons for sneezin'
Scratch tests test for them
Similar answers:
Aboveallelse
Abrainchallenge
Absenceofmallets
Absenteeballet
Afishcalledw
Afishcalledwanda
Aghostlygalleon
Alle
Allears
Alledly
Allee
Alleen
Allees
Allegation
Allegations
Allege
Alleged
Allegedly
Allegedprep
Alleger