Hi James ,

Please refer Kent's Repertory of Homeopathic  Materia Medica , Page1363 -

potatoes agg -alum,colo , nat .sulph......etc.

Page - 1364

Vegetables (green ) agg. -Alum , Nat. sulph .....etc .

In chronic sickness condition is aggraveted  when 

patient eats certain food .He must avoid them .

P.K.Sethi

Thanks, Prem.  I advised her to not eat potatoes or other nightshade vegetables.  I will look into the remedies you suggested.

No knowledge of above... however, you may find this abstract cut and pasted from research gate useful.  From international Journal of Dermatology..  Walter and Dorinda Shelley et al

Current therapy for lichen sclerosus centers on topical steroids, particularly clobetasol propionate. As some evidence suggests an infectious etiology owing to Borrelia, we studied the effect of penicillin and cephalosporin therapy on patients with lichen sclerosus who had responded poorly to treatment with potent topical corticosteroids.

Fifteen patients with lichen sclerosus were treated for 3–21 months with either penicillin or cephalosporins in an observational study. Thirteen patients (nine women, four men) received penicillin, including intramuscular penicillin G benzathine suspension and/or oral penicillin V potassium, amoxicillin, or amoxicillin/clavulanate potassium. Two additional men received cephalosporins, either intramuscular ceftriaxone sodium or oral cefadroxil monohydrate.

All patients showed a significant response, evident within a few weeks. Most striking was the rapid relief of pain, pruritus and burning. Four patients cleared completely, four experienced marked improvement, and the remaining seven had a favorable improvement of symptoms with incomplete clearing of lesions.

We recommend treatment of lichen sclerosus with either intramuscular ceftriaxone every 3 weeks or intramuscular penicillin every 2–3 weeks. The addition of oral penicillin or cephalosporin presumably helps maintain antibiotic blood levels and may be a sufficient treatment in some cases.