In light of such transitions of muscular into neuralgic types of fibrositis, it seems inconsistent to postulate a gouty origin for the latter and at the same time to deny it any share in the production of the former. For ourselves, we fully recognise gout as the most potent predisposing factor in sciatica and brachialgia, and ergo in the closely associated and often antecedent muscular types of fibrositis.
While insisting on the importance of gout as a predisposing factor in fibrositis, we feel called upon to emphasise the fact that we are not sheltering ourselves under that nebulous term “latent” gout, for our contention is based on the ground that in the vast majority of the cases for which we claim a gouty origin unequivocal proofs of gout, such as tophi, etc., were present.
Incidence of Gouty Stigmata in Various Types of Fibrositis
Out of 343 instances of fibrositis of the joints such stigmata of gout were present in 118 males and nine females. Of muscular types, taking as our example lumbago, we find that out of twenty-seven examples no less than ten displayed definite evidences of a gouty taint. Similarly, out of thirty-eight cases of lumbago complicated by other manifestations of fibrositis eleven males and one female were of gouty habit. Also in twenty-three cases of lumbago associated with arthritic fibrositis six males, but no females, displayed the same proclivity. Lastly, out of thirty-eight cases of lumbago complicated by right or left sciatica ten were of the same diathesis.
Passing in turn to consider this same factor in relation to sciatica, we note that out of 142 examples twenty-four men and three women were gouty. Occasionally, too, apart from glycosuria, it appears to be responsible for bilateral sciatic pains, for in three examples of this nature gout was present.
James Taylor is also very definite on this point, that, glycosuria aside, affections of individual peripheral nerves occur frequently in the gouty. There is little doubt, he says, that sciatica is “frequently present in the gouty and is sometimes directly due to that state.” While admitting that in many, if not most, cases of sciatica there are associated arthritic changes in the hip joint, he yet affirms his belief that “there are some in which the neuritis is a primary condition.”
With this statement my own experience accords, but with a reservation, viz., that the sciatic neuritis is apparently secondary to a lumbar or gluteal fibrositis, with sequential involvement of the sciatic nerve sheath and extension to the nerve trunk.
Taylor holds also that anterior crural and brachial neuritis may be directly due to gout. As to brachial neuritis, he says: “I have known it occur apart from any recognisable arthritic change in a patient who was the subject of gout.”
Having regard to the flippant manner in which the term “neuritis” is but too frequently bandied about, it is refreshing to note that in all Dr. Taylor’s cases “the existence of the neuritis” was shown “by the tenderness of the nerve trunks, the spontaneous, often severe, pain, and atrophic changes both in the skin and the muscles—the glossy skin and atrophied muscles.”
As for the involvement of other nerves, trigeminal neuralgia is held to be the most common; but, for myself, I have never felt justified in claiming any such example as gouty. Nor am I satisfied that persons of gouty habit are more prone than others to attacks of migraine.