There are several forms of aspergillosis, including: 1. Allergic Bronchopulmonary Aspergillosis (ABPA): Affects individuals with respiratory conditions like asthma or cystic fibrosis. 2. Chronic Pulmonary Aspergillosis: Develops over months or years and often affects those with pre-existing lung conditions. 3. Invasive Aspergillosis: A severe form that occurs when the infection spreads from the lungs to other parts of the body, common in immunocompromised patients.