Mold Exposure: Health Risks, Symptoms, and Vulnerable Populations

Health Effects of Indoor Mold

Mold spores and mycotoxins cause a spectrum of effects, dose- and host-dependent.

Common Symptoms

• Allergic: Sneezing, rhinorrhea, itchy eyes, congestion, wheezing (IgE-mediated).
• Asthma exacerbation: Trigger in sensitized individuals.
• Irritant: Eye, skin, throat irritation (non-allergic).
• Infections: Rare; mainly immunocompromised (aspergillosis, mucormycosis).
• Toxic (mycotoxin): Controversial; high-level occupational/agricultural exposure linked to systemic symptoms.
• Non-specific: Fatigue, headache, cognitive complaints (sick building syndrome).

High-Risk Groups

• Allergic/atopic individuals.
• Asthmatics.
• Immunocompromised (transplant, chemo, HIV, steroids).
• Children (developing immune/respiratory systems).
• Elderly (comorbidities, reduced clearance).

Action Steps

1. Identify and fix moisture source (leak, humidity >60%).
2. Clean small areas (<10 ft²) with detergent/water; dry completely.
3. Large contamination (>10 ft²) or HVAC involvement → professional remediation.
4. Discard porous materials (carpet, drywall, insulation) if moldy.
5. Consult clinician if symptoms persist; allergy testing, spirometry if indicated.