| Eyes | Skin | Respiratory Tract | Bone Marrow | Gastrointestinal (GI) Tract | Central Nervous System (CNS) | |
|---|---|---|---|---|---|---|
| Minimal | Tearing, burning, mild conjunctivitis, photophobia. | Erythema. | Rhinorrhea, hoarseness, hacking cough. | Reactive leukocytosis. | Nausea, vomiting. | Apathy, depression, anxiety. |
| Moderate | Severe conjunctivitis with blepharospasm, lid edema, pain, miosis. | Blisters. | Severe cough, expectoration, aphoria. | Leukopenia (often preceded by leukocytosis). | As above. | As above. |
| Severe | Corneal edema, severe pain, ocular perforation. | Deep burning with full-thickness skin loss. | Dyspnea, pulmonary edema, asphyxia, bronchopneumonia. | Severe leukopenia, aplastic anemia. | Later nausea, vomiting (possible bloody), diarrhea. | Agitation, hyper-excitability, abnormal muscular activity, coma. |