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Dermatology > Pruritus > Flashcards

Flashcards in Pruritus Deck (13)
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1
Q

C type fibers are located

A

Intaepidermal

2
Q

Best for cholestatic pruritus

A

Opioid antagonist

*serum conjugated bile acid levels do NOT correlate with severity of pruritus

3
Q

MC systemic cause of pruritus

A

CKD

* due to xerosis, hypervitamintosis a, anemia, hyperpara, increased histamine, neuropathy

4
Q

Mycotic pruritus ani

A

Candida
Epidermophyton flocc
T rubrum

5
Q

Aquagenic pruritus

A

Degranulation of MC and increased histamine & ach found

Associated with poly vera, jxg, hypereo syndrome, myelodysplastic syndrome

6
Q

Associated with papuloerythroderma of ofuji

A

T cell lymphoma, B cell lym, sezary, hep c, aspirin, ranitidine, furosemide

7
Q

MC disorder associated with trichitillomania

A

OCD

8
Q

Characterized by uncontrollable desire to rub/pinch oneself

A

Dermatothlasia

9
Q

Burning mouth tx

A

Antidepressants

Alpha lipoic acid

10
Q

Roth bernhardt syndrome

A

Meralgia parasthetica

*entrapment of lateral femoral cutaneous nerve

11
Q

What may aid in dx of CRPS

A

Three-phase technetium bone scan

12
Q

Common complication of crps

A

Osteoporosis

13
Q

Familial dysautonomia (Riley day)

A

AR, IKBKAP, abnormality in splicing mRNA
Defective lacrimation, decreased pain, impaired temperature an BP regulation, absent DTRs
Hyperhidosis, transient erythema predominantly on the trunk, acrocyanosis, absence of tongue papillae
Shirmir test positive, intadermal histamine test diminished

Congenital insensitivity to pain with anhidrosis - repeated injury to acral/oral sites, TRKA gene (encodes nerve growth factor)