Rashes 5 Flashcards
Which rashes are type 4 hypersensitivity reactions
- Allergic Contact Derm
- Lichenoid Drug Eruptions
- Morbilliform drug reaction
- Drug hypersensitivity reaction
- Erythema Multiforme
- SJS
Oral LP - which oral meds
-Plaquinil has 50% chance of working (but won’t know unless we try it)
SE: anemia, rarely irritates the liver, extremely rare is Blindness (occurs 3-5 years out due to cumulative exposure, if tx 6 months -shouldn’t get blindness)
Labs: CBC, CMP (Liver), baseline eye exam and annual
-MTX (if Plaquinil doens’t work)
NO PREGS
LIVER bx once reach 1.5 g total
Higher risk of liver dz: if drink ALCOHOL (no Alc at ALL), DM, Kidney dz, obesity
Hormonal acne distribution
Can be chin only Or along jawline (Hormonal is only inflammatory acne - not comedonal along chin or jaw) Spironolactone 50 qAM Plus Doxy
Generalized GA - what oral meds
Try Doxy first (can clear but not as well as Plaquinil )
-Plaquinil
Niacinomide is C/I in which case
C/I in pts on statins
Used in BPemphigoid, along with doxy
BP oral meds
-Doxy 100 mg BID x 3 months WITH
Niacinomide 500 mg BID (C/I STATINS!!!!)
Keep on Doxy as long as need it
- MTX is also good (can do 7.5 mg/wk instead of 15) (no alcohol, liver bx at 1.5 grams, kidney fx)
- Dapsone
Generalized LP oral meds
1) Prednisone 3 week taper: 40 mg (wk1), 20 mg (wk 2 and 1 and stop)
2) Metro 500 BID x 3 weeks (can’t drink) PLUS Clobetasol if itchy
3) Sun: 20 min each side TIW w/o SS on affected areas or light laser tx
+ TAC jar in all cases
What to do if Rosacea is not improving on Metro, then Doxy 20 mg BID Plus Cleocin T gel BID (then added Sulfacetamide-sulfur 10%-5%) cleanser)
D/C doxy and Cleocin T gel
Start Soolantra samples x 3-4 weeks and if works, call in PA or compound ivermectin with KETOCONAZOLE (bc rosacea goes together with seb derm redness)
Chronic itching on outer labia without visible skin changes
Dermatitis can look like extra mammory PAGET dz, so get bx
Can never use Plaquinil in which pts
Never in PSORIASIS
Plaquinil can be used in which conditions and never in which
- oral LP (but can cause LP rash)
- generalized GA
- never in Psoriasis
What tx if have a fluffy scaly 1 patch/plaque that looks like T Versi or Numm eczema (and what questions to ask
- Any recent ST? Virus? (Herald patch of Pytiriasis Roses)
- If KOH negative for spaghetti and meatballs, still do Ketoconazole in pm (to cover fungal cause can scratch top layer off)
- And do HC 2.5 AM for Numm Eczema
If pt present with T.Corporis and Numm eczema patches, what tx
Do Lamisil BID x 3 weeks because TAC will make it worse
Then start TAC at 4-6 weeks (RTC in 4 )
Axillary freckling
- Neurofibromatosis
- or Dowling Degos
What always to check when putting a pt on antibiotics
If on warfarin!!!
Don’t worry if on oral blood thinners (pradaxa)
Keflex 500 TID - has least potential to interact with Warf but still tell them to have PCP check INR weekly
What to do and ask when see a wierd rash
Bx on 1st visit
Are you picking at these? Pain/itch?
Where not to use iodine and why
Near eyes, can cause blindness
Pt comes in with very itchy rash all over body
Tx for poss scabies (permethrin 5% in AM, neck down including groin and under fingernails , clean bathroom and sheets with bleach, and 1 week later) and Clobetasol cream 2 onoff,
PLUS 4 mm PUNCH Bs for BP
If better but not gone and BP bx negative - do TRUE testing and clobetasol for derm unspecified and allergic contact derm
If negative TRUE testing, do CBC and BP labs, cont clobetasol
If BP not better on doxy, use what
Dapsone (if hx of cancer because can’t use Cellcept/MTX cause immunosuppressive)
Can’t use Valtrex in whom
Pregs (use acyclovir 800 5 times per day x 7 d for shingles)
Kidney dz
Valtrex 1 g TID x 7 days fo shingles
If pt calls with rash from Doxy, do what
Come in today or tmrw - likely sunburn
Do that for all rash reactions from new meds
What is the name of chemical in nail polish and in eye makeup remover that irritates skin
Micro deposits of Macrolides
And Cathon C A in makeup
How to explain Psoriasis to pt
So a couple of things to consider when it comes to Ps. It’s chronic genetic condition that comes and goes and we can treatment options but no cure. Ps does something interesting called kebnarization - if you scratch or rub the area, it will spread and won’t improve if don’t stop.
When palmoplantar psoriasis, ask what?
Smoking?
If see new patient, ask what
Name of PCP
Lichenoid inflammation on path could be sign of
Lupus
If pt has spots of concern on face that don’t look like anything, do what
HC 2.5 and RTC 4 weeks to recheck
If seb derm - likely facial seb derm that’s rubbed so Keto shampoo and HC for face and RTC 4-6 weeks
How to explain shingles to pt
Pain on 1-10?
It’s reactivation of chicken pox, it stays in spinal canal and can be triggered by stress, illness. A lot of inflammation along nerve so pain. Neurontin - start 1 tab first day, BID 2nd day and TID 3rd day.
For sleep: ALovil??
No shingles shot for 6 month bc just inaculated yourself (FDA approved after 50 yo but insurance covers only
Contagious - no chem wards, no newborns, only to naive people
Once crusts over, not contagious anymore. If person had shingles or had vaccine, it’s not contagious
ACCUTANE labs (and what to tell pt) and conversation
CBC, CMP, Lipids q 1 month (fasting) hCG
So when acne is not improved after 6 months of antibiotic use, we are concerned with lifelong scarring. Everything has risk and will go over the risks and side effects of Accutane but keep in mind that we minimize that risk with monthly labs. On the other hand, the risk of undertreating is lifetime scarring. After treatment, in 2 out of 3 pts, acne can recite but for some abx (doxy) works better after Accutane.
The logistics of being on Accutane if you decide to do it is having monthly office visits and labs done x 5-6 months.
SE: dryness for all (eyes, lips: chapstick, visene)
At 2 months, acne will get worse because being pushed to the surface
Depression
No Pregs
High cholesterol and liver/pancreas irritation (but we watch labs)
Loose link to Chrohns or UC (no FH?)
Rare: joint or muscle pains (maintenance weights are ok but not other, running a lot ok), muscles heal slowly when lifting wgts
Sun exposure (less than Doxy)
So 3 choices: continue current, Minocycline or Accutane
If do minocycline - can only do 6 months, SE happen more often
SE: dizziness, HA, staining of skin, cartilage, gums/teeth (4-5% chance), drug induced hepatitis or jnt pain.
Not bactrim bc no longer recommended for acne bc can have TEN (Toxic Epidermal necrolysis of skin)
Once hormonal acne is regulated on Yaz, what to do with Abx?
Stop it
Explain dermatomyocitis and which labs
It’s an autoimmune condition that makes you itch. 25% of DM pts have malignancy on inside that’s causing it so need to see oncology for eval (Dr. Genhock)
So no cream will help cause it’s coming from inside
Joint pains? Cough? - need rheumatology because pt has weakness and difficulty swallowing (Dr. Solomon)
LABS: aldolase, CK (for DM),
Itchiness: BP, CBC, CMP, Sed Rate, SPEP (high M spike = cancer)
DM pt had severe anemia, high Sed rate, kidney dz (can’t get rid of toxins in body causing itch and leg swelling), high M-spike on SPEP (protein in bone marrow —> leukemia)
Leukemia can cause anemia, kidney dz, skin itching
(DM bc rash on fingers and weakness - did bx