Some uses of DMSO in the medical field: Dimethylsulfoxide (DMSO)
However - be aware that it is not with toxicity issues:
Section 11: Toxicological Information
Routes of Entry: Absorbed through skin. Eye contact. Inhalation.
Toxicity to Animals:
Acute oral toxicity (LD50): 7920 mg/kg [Mouse]. Acute dermal toxicity (LD50): 40000 mg/kg [Rat].
Chronic Effects on Humans:
MUTAGENIC EFFECTS: Mutagenic for mammalian somatic cells. Mutagenic for bacteria and/or yeast. May cause damage to
the following organs: blood, kidneys, liver, mucous membranes, skin, eyes.
Other Toxic Effects on Humans:
Slightly hazardous in case of inhalation (lung irritant). Slightly hazardous in case of skin contact (irritant, permeator), of
Special Remarks on Toxicity to Animals: Not available.
Special Remarks on Chronic Effects on Humans:
May cause adverse reproductive effects (female fertility and fetotoxicity - post implantation mortality) and birth defects based
on animal data. May cause cancer (tumorigenic) based on animal data. May affect genetic material (mutagenic).
Special Remarks on other Toxic Effects on Humans:
Acute Potential Health Effects: Skin: Causes skin irritation. May cause urticaria(hives), skin rashes, and dermatitis. Dimethyl
Sulfoxide is readily absorbed through skin and may carry other dissolved chemicals into the body. An unusual garliconion-
oyster odor may develop on breath and body/skin. Absorption through skin may also cause diarrhea, and affect
respiration(dyspnea, cyanosis), blood, behavior (fatigue, dizziness, sedation, headaches), vision (transient photophobia,
and disturbances of color vision), urinary system (hematuria). Eyes: Causes eye irritation. May cause blurred vision,
corneal opacity, chemical conjunctivitis. Inhalation: Causes respiratory tract irritation. Symptoms from exposure to high
vapor concentrations may include coughing, shortness of breath, headache, dizziness and sedation. Ingestion: Causes
gastrointestinal tract irritation, and an usual garlic-onion-oyster may develop on breath, and body/skin. May affect behavior/
central nervous system, respiration (dyspnea). Symptoms may include nausea, vomiting, and diarrhea, abdominal pain,
drowsiness, confusion, lethargy, agitation, disorientation, tremor, muscle weakness, chills, chest pains. May also affect liver
(elevated liver enzymes, jaundice), cardiovascular system, and urinary system (hematuria, hemoglobinuria, renal tubular
injury), eyes (transient photophobia and disturbances of color vision, conjunctive irritation) Chronic Potential Health Effects:
Skin: Chronic absorption may cause effects similar to that of acute skin absorption. Chronic skin contact may cause scaling
from DMSO MSDS
I used it a few years ago for a skin infection that Rica in her last year, as a prescribed treatment from her vet. Please just be aware that there are some toxicity issues with using this chemical for long term exposures.
I have no suggestions for you, but am sending good thoughts to Cooper that something can be done to help him with this.