Primary Care
Physician perspectives on preventive care, chronic disease management, and evidence-based primary care practice.
Recent Discussions
How do you determine if a positive thimerosal patch test isn't a false positive?
Thimerosal is commonly positive on patch testing and frequently not relevant. In fact, it was voted (non) Allergen of the Year by the American Contact Dermatitis Society. While small amounts are used in some influenzae vaccines, there is not much else that contains this. At one time, it was a preser...
How do you counsel patients who develop DVT or atrial fibrillation requiring anticoagulation when being treated with lecanemab or donanemab?
I do not think that anticoagulation is contraindicated in patients with these Alzheimer's disease antibodies, but I would want to check APOE status. I would not initiate the AD treatment if the patient is E4E4, and even one E4 would make me hesitant to have a patient on anticoagulation and an Alzhei...
In ischemic stroke patients with low LDL levels (<30-50 mg/dl), would you consider lowering LDL levels to lower values without concern for any side effects?
If LDL levels are already below 70, I don’t target a lower goal. The SPARCL trial showed that reducing LDL to this range has an NNT of about 45 to prevent one stroke, which I find to be modest at best. From my perspective, lowering LDL further (<30-50 range) shifts the focus to treating a number rat...
How would you approach the management of a patient who develops an accelerated junctional rhythm who exhibits no symptoms and has no prior history of cardiac issues, aside from consulting a cardiologist?
There would be many clinical factors to consider before making a decision to treat to suppress such an arrhythmia including the age of the patient, presence of associated structural heart disease, symptoms associated with the arrhythmia, its rate and putative mechanism, and its pattern and persisten...
How would you manage a patient with nonspecific clinical symptoms and pathology consistent with spongiotic and psoriasiform dermatitis other than oral JAK inhibitors?
Vast majority of these patients will not have any diagnosable underlying cause (like 99% in a non-academic setting) and the longer and more you look before you treat, the longer and worse they suffer. Take your best guess if more psoriasiform or more eczematous. If guess psoriasiform give them sampl...
What is your approach to managing sicca symptoms in patients not responding or not tolerating conservative measures, pilocarpine, and cevimeline?
Try lower doses of pilocarpine with just 1/4 tablet at a time. Very slowly go up on the dose as tolerated. The patient's job is to find the maximum tolerated dose. I recommend this pill splitter: Mix capsule of cevimeline in water, just drink a tiny bit at a time tid and go up on dose as tolerated...
What treatments would you recommend for patients with chronic urticaria who have minimal improvement with anithistamines and Xolair?
Cyclosporine, no question about it. I start at about 3 mg/kg/d of modified cyclosporine if omalizumab been failed, then try to taper once it is well controlled. I also want to give glucosamine at about 25 mg/kg/d - which has been shown in a randomized double-blind placebo-controlled clinical trial t...
How do you interpret the presence of GAD antibody in a middle-aged patient with diabetes when all other type 1 diabetes antibodies are absent?
It depends on patient's clinical course of diabetes, controlled on orals vs insulin, BMI, family history DM. For a brittle DM patient, high GAD titer could indicate DM1 or LADA. For stable DM patients, the recommendation is to have 2 positive antibodies to diagnose DM1.
How do you evaluate livedo reticularis (not livideo racemosa)?
Livedo reticularis appears as an interrupted vascular network on the lower limbs. One does not need to warm up the affected area in order to make this diagnosis. The response to heat usually occurs in cutis marmorata that is found in children. Livedo reticularis when it is acquired in teenage and la...
Do you recommend vitamin C supplementation with PO iron in patients with iron deficiency?
Vitamin C supplementation is unnecessary. Taking the iron with a glass of orange juice away from food and especially coffee optimizes absorption. That being said vitamin C does no harm. See vonSiebenthal et al eClinical Works 2023 (Lancet publication), Benson et al, Lancet Haem 2025 or Auerbach et a...