Theory Preparation-0

Familial hypercholesterolaemia

🔰 Primary dyslipidaemias; Combined dyslipidaemias👇🏻

Type III hyperlipoproteinaemia

🔰 Primary dyslipidaemias;  Hypertriglyceridaemias👇🏻

Type I hyperlipoproteinaemia

Type V hyperlipoproteinaemia

Type IV hyperlipoproteinaemia

🔰 With these 2, u ll need only 15 mins to revise this boring chap.

Happy learning😊

🔰 *Cerobrotendinous  xanthomatosis*

 

➡️Autosomal recessive

➡️Defect in Sterol 27 hydroxylase

➡️Inc levels of Cholestenol and 7 hydroxycholesterol.

Plasma cholesterol levels are normal

 

➡️Childhood or earlyadulthood

 

➡️Tendon xanthomas and xanthelasmas

➡️Myelin destruction in CNS due to accumulation of cholestenol and 27 OH cholesterol leading to mental retardation, seizures,spasticity, ataxia, peripheral neuropathy.

 

➡️Early onset cataract

Diarrhea

Premature osteoprosis

Inc risk of CVD

 

➡️TREATMENT

 

Chenodeoxycholate

🔰 *Sitosterolaemia*

 

➡️Autosomal recessive

➡️ABCG5 and ABCG8 mutation

➡️Defect in proteins Sterolin-1 and Sterolin-2 in enterocytes and hepatocytes.

These transport plant sterols to facilitate their excretion.

Defects leads to raised levels of plant sterols ” Beta sitosterol” in body

 

➡️Impaired growth

Tendon xanthomas

Tuberous xanthomas

Anaemia and thrombocytopenia

Arthritis

Inc risk of premature CVD

 

➡️Treatment

 

 *Ezetimibe* reduces plant sterol levels

Type 1 lipoproteinemia nicotinic   acid+ antioxidants

Type 2 statin , ezetimibe, bile acid sequestrant,  mipomersen, Lopitamide, LDL apheresis

Type 3 Statin, Fibrate

Type 4 Statin

Type 5 Nicotinic Acid, Antioxidant, Fibrate

 

Type 1 and Type 5 have chylomicrons so same treatment

 

Type 2, 3, 4 all have LDL so same treatment

 

 

Type 2 is most serious so needs special measures like LDL Apheresis

🔰 *Secondary dyslipidaemias*

 

1️ Diabetes mellitus

Type I  Increased HDL, LDL and VLDL and hence increased risk of CVD

 

Type II  Decreased HDL, Normal LDL and Increased  Tgs.

 

2️ Chronic cholestasis

Increased Cholesterol

 

3️Nephrotic syndrome

Increased cholesterol

 

4️ Chronic renal failure

Increased Tgs

 

5️Alcohol

Increased Tgs

 

6️Systemic steroids

Increased LDL  and HDL

 

7️ Ciclosporin

Increased LDL cholesterol

 

8️ Retinoic acid deriavatives

 

Increased Tgs

Familial hypercholesterolaemia

🔰 Primary dyslipidaemias; Combined dyslipidaemias👇🏻

Type III hyperlipoproteinaemia

🔰 Primary dyslipidaemias;  Hypertriglyceridaemias👇🏻

Type I hyperlipoproteinaemia

Type V hyperlipoproteinaemia

Type IV hyperlipoproteinaemia

🔰 With these 2, u ll need only 15 mins to revise this boring chap.

Happy learning😊

🔰 *Cerobrotendinous  xanthomatosis*

 

➡️Autosomal recessive

➡️Defect in Sterol 27 hydroxylase

➡️Inc levels of Cholestenol and 7 hydroxycholesterol.

Plasma cholesterol levels are normal

 

➡️Childhood or earlyadulthood

 

➡️Tendon xanthomas and xanthelasmas

➡️Myelin destruction in CNS due to accumulation of cholestenol and 27 OH cholesterol leading to mental retardation, seizures,spasticity, ataxia, peripheral neuropathy.

 

➡️Early onset cataract

Diarrhea

Premature osteoprosis

Inc risk of CVD

 

➡️TREATMENT

 

Chenodeoxycholate

🔰 *Sitosterolaemia*

 

➡️Autosomal recessive

➡️ABCG5 and ABCG8 mutation

➡️Defect in proteins Sterolin-1 and Sterolin-2 in enterocytes and hepatocytes.

These transport plant sterols to facilitate their excretion.

Defects leads to raised levels of plant sterols ” Beta sitosterol” in body

 

➡️Impaired growth

Tendon xanthomas

Tuberous xanthomas

Anaemia and thrombocytopenia

Arthritis

Inc risk of premature CVD

 

➡️Treatment

 

 *Ezetimibe* reduces plant sterol levels

Type 1 lipoproteinemia nicotinic   acid+ antioxidants

Type 2 statin , ezetimibe, bile acid sequestrant,  mipomersen, Lopitamide, LDL apheresis

Type 3 Statin, Fibrate

Type 4 Statin

Type 5 Nicotinic Acid, Antioxidant, Fibrate

 

Type 1 and Type 5 have chylomicrons so same treatment

 

Type 2, 3, 4 all have LDL so same treatment

 

 

Type 2 is most serious so needs special measures like LDL Apheresis

🔰 *Secondary dyslipidaemias*

 

1️ Diabetes mellitus

Type I  Increased HDL, LDL and VLDL and hence increased risk of CVD

 

Type II  Decreased HDL, Normal LDL and Increased  Tgs.

 

2️ Chronic cholestasis

Increased Cholesterol

 

3️Nephrotic syndrome

Increased cholesterol

 

4️ Chronic renal failure

Increased Tgs

 

5️Alcohol

Increased Tgs

 

6️Systemic steroids

Increased LDL  and HDL

 

7️ Ciclosporin

Increased LDL cholesterol

 

8️ Retinoic acid deriavatives

 

Increased Tgs

2️ Vitamin D

Vitamin D deficiency 👇🏻

🔰 For vitamin D, read from above and then revise from mcqs only

3️ Vitamin E

Vitamin E deficiency👇🏻

Vitamin E excess👇🏻

4️⃣ Vitamin K

🔰 Read from above and revise with solving mcqs only

🔰IMPORTANT TIP 👇🏻

🌹 Water soluble vitamins 👇🏻

5️ Vitamin B1/ Thiamine  deficiency 

6️Vitamin B2 / Riboflavin deficiency

7️ Vitamin B3 / Niacin  deficiency

 Pellagra

8️ Vitamin B6 / Pyridoxin deficiency

9️ Vitamin B9 / folate deficiency

🔰 Vitamin C deficiency

🔰Vitamin B7/ Biotin deficiency

ZINC DEFICIENCY

Acrodermatitis enteropathica👇🏻

🔰 Iron deficiency👇🏻

🔰 Copper deficiency

🔰 Selenium deficiency / Keshan disease

🔰 Summary👇🏻

Collodion baby and self improving congenital ichthyosis👇🏻

IV : light Grey scales covering extensor,  always sparing flexures ,palmo plantar hyperlinearity

 

RXLI: large thick dark brown to yellowish brown crust.

Dirty look of neck and sides of trunk.

 flexures usually involved

Palm and soles spared.

 

Lamellar :thick ,plate like dark brown crust involving whole body

Maintain hydration humidity maintain 60 to 80 percent decrease every 3 to 4days

Emolient

50%LP 50WSP

Taking bath with pinch of sodabicarb

Acetretin

Eye care artificial tears

For wounds antibacterials fudic cream

 

30min in taking bath and remove scale and 30min of applying emolients

*1* emolients : high water content ointments.. keratolytics urea and lactic acid ,bathing daily with sodium bicarbonate additive   systemic therapy  . isotretinoin or acetretin *.. Genetic* *counselling* of parents

Retinoids also improve sweat gland function in these patients

To prevent icthyosis:

Topical tazarotene gel

Topical n acetyl cysteine.

Once developed :

Artificial tears

 

Surgical correction

To prevent icthyosis:

Topical tazarotene gel

Topical n acetyl cysteine.

Once developed :

Artificial tears

Surgical correction

In management plan

Ist general

Emollients regular with keratolytics

Systemic treatment retinoids for harlequin icthyosis

Special aspects of treatment

Eyes lubricants, taz gel for ectrobion

Physiotherapy for contractures

Vit d supplements

 

Treat superinfections

How will u give retionids in small child?

0.5 MG/kg dose .

 

Freezing capsule and then cutting and dissolving in honey or olive oil.

Bathing suit ichthyosis👇🏻

Lamellar ichthyosis and  Congenital ichthyosiform erythroderma👇🏻

KERATINOPATHIC ICHTHYOSIS 👇🏻

ERYTHROKERATODERMA 👇🏻

 

Erythrokeratoderma variabilis

Progressive symmetric erythrokeratoderma

OTHER NON SYNDROMIC FORMS OF ICHTHYOSIS👇🏻

SYNDROMIC ICHTHYOSIS👇🏻

X LINKED SYNDROMIC ICHTHYOSIS ASSOCIATED WITH CHOLESTEROL BIOSYNTHESIS👇🏻

  1. Conradi Hunermann Happle syndrome👇🏻

This is mcq of Conradi–Hünermann–Happle syndrome ansswer should be E. Basic defect in cholestrol biosynthesis

CHILD syndrome👇🏻

Ichthyosis follicularis-atrichia-photophobia syndrome 👇🏻

IFAP

✅for diagnostic purpose… u have to pluck the hair ?or cut ?

And

Which Site????

Cut. Hair will break on an attempt to pluck

SAM syndrome (severe dermatitis-multiple allergies-metabolic wasting)

PEELING SKIN SYNDROMES👇🏻

Type A Peeling skin syndrome👇🏻

Type B Peeling skin syndrome👇🏻

Acral peeling skin syndrome👇🏻

Ichthyosis prematurity syndrome👇🏻

🔰 NEURO-ICHTHYOTIC SYNDROMES👇🏻

Refsum disease👇🏻

Multiple sulphatase deficiency👇🏻

Sjogren-Larsson syndrome👇🏻

🔰 Important

These images of syndromic forms of genetic diseases are really imp from toacs points of view. U may get such images in clinical slides for identification and other related questions.

Sometimes they may give these images along with a scenario in theory exam as well.

So practice them well.

KID syndrome (keratitis-ichthyosis-deafness)🏻

Neutral lipid storage disease with ichthyosis👇🏻

Trichothiodystrophy

Multiple minute digitate hyperkeratosis👇🏻

Keratolytic winter erythema👇🏻

Perforating keratotic disorders👇🏻

🔰 ACQUIRED KERATODERMAS

1️⃣ Keratoderma climactericum(Hauxthausen disease)👇🏻

2️ Acquired ichthyosis

3️⃣ Pityriasis rotunda👇🏻

Mal de meleda

Loricrin keratoderma

Inherited skin diseases associated with pseudo ainhum

Striate/ focal PPK

Punctate PPK

Spiny keratoderma

Marginal papular keratoderma

Cole disease

Transient aquagenic keratoderma

🔰 Syndromic PPK

🫀PPK and cardiomyopathy

1. Naxos syndrome

🔰 One of the most imp topics of this chap👆🏻

Carvajal Huerta syndrome

🦻🏼 PPK AND HEARING IMPAIRMENT

1️⃣ Vohwinkle syndrome

2️⃣ Bart pumphrey syndrome

3️⃣ Mitochondrial PPK with hearing impairment

🔰 PPK and cancer

1️⃣ Huriez syndrome

2️⃣ Howel Evans syndrome

PPK , sex reversal and cancer

  1. Odonto-onycho-dermal dysplasia

🔥 PPK in ectodermal dysplasia and related diseases👇🏻

1️⃣ Clouston syndrome(Hidrotic ectodermal dysplasia type 2)

2️⃣ Papillon Lefevre syndrome

Haim munk syndrome*

Olmsted syndrome

PPK WITH OPHTHALMIC MANIFESTATIONS👇🏻

ACQUIRED KERATODERMAS

Flegel disease

🔰 *Important note for today*

Ichthyosis and ppk are 1 of those important chaps which are must to come in theory as well as clinical exam including clinical slides.

Since the chap is very lengthy and needs repeated revision to memorize it, imp tip here is to start reading from rooks and then narrow it down to the tables and flow charts.

I have shared a ppt in which all of it has been summarised beautifully.

U can keep it even for last day revision.

Listen to all the detailed voice notes for concepts and then revise it only from tht ppt.

Happy learning😁

🔰very imp and compact table for ichthyosis and ppk

ichthyosis,syndromes and ppk

Severity assessment

Complications

Disease course, investigations and management

10th edition👆🏻

🔰 Hailey hailey disease

Clinical features

Dds👆🏻

Complications

Inveatigations and treatment

10th edition

🔰 Summary👇🏻

🔰 Important tip for this chap👇🏻

Listen to above voice notes and then revise from above table and treatment ladder from rooks only and simply practice mcqs for this chap

2️⃣ Hypohidrotic ectodermal dysplasia

🔰 for reference, pictures given in rooks are also gud

3️⃣ Ankyloblephron- ectodermal defect – cleft lip/palate syndrome

4️⃣ Ectrodactyly – ectodermal dysplasia cleft lip/palate syndrome

5️⃣ Tricho – dento – osseous syndrome

6️⃣ Tricho-rhino-phalangeal syndrome

Only remember highlighted 1s

7️⃣ Hidrotic ectodermal dysplasia / Clouston disease

8️⃣ Focal dermal hypoplasia

9️⃣   MIDAS syndrome

(Microphthalmia, dermal aplasia and sclero cornea)

🔰 Ectodermal dysplasia are an imp genodermatosis which are imp for theory exam.

Simply understand the features of ectodermal dysplasia and specific features of its various types. Revise from above short notes only and skip rooks.

Practicing mcqs will be sufficient in the last days of prep.

Happy learning😊

Dyschromatosis symmetrica hereditria

Dyschromatosis universalis hereditaria

🔰 *Important tip for this chap*

 

Tables shared in the start of this chap are enough for a quick revision. Practice mcqs for exams and revise from tables

Happy learning😊

2️⃣ Prolidase deficiency👇🏻

3️⃣ Osteogenesis imperfecta 👇🏻

🟩AD

 

🟩TSC1 TSC2

 

🔰Hamartomas in any tissue

 

🔰Eyes: Retinal phacomas (white streaks along the vessels or as small, rounded tumours near the disc)

 

scotomas

 

Hypopigmented spots in the iris

 

*CNS* :

 

Subependymal nodules,

Obstructive hydrocephalus,

Mental retardation.

 

*Cardiac* :

 

Cardiac rhabdomyomas,

Cardiac arrhythmia

 

 *Renal* :

 

angiomyolipoma,

Renal cysts,

Renal cell carcinoma.

 

 *Pulmonary* :

 

Recurrent spontaneous pneumothorax,

Lymphangioleiomyomatosis gives rise to chylothorax.

 

 *GIT* :

 

hamartomatous colonic polyps

 

 *Endocrine and other metabolic disturbances* :

 

pituitary–adrenal dysfunction,

thyroid disorders

and premature puberty.

 

🔰Investigations:

 

Woods lamp examination for ash leaf macule

 

Eye: Slit lamp examination and fundoscopy

 

ECG: conduction defects

 

Echo:Cardiac rhabdomyomas

 

 _CT brain:_ calcified periventricular nodules that project into the lateral ventricles and hypoattenuated parenchymal lesions.

 

 **_MRI Brain.*_*

more sensitive in the detection of parenchymal lesions

 

U/s abdomen: for renal hemartomas.

 

Chest X RAY: irregular reticulation of the lung field

 

X ray skull:

 

Calcification on plain xray

 

X RAY Hands and feet :

 

Cyst‐like lesions of the phalanges and irregular thickening of the cortex of the metatarsals and metacarpal.

 

Colonoscopy:

hamartomatous colonic polyps.

 

Family screening and  DNA testing.

 

🔰Management:

 

Angiofibromas: pulsed dye vascular laser (wavelength 595 nm)

Co2 laser

 

Topical rapamycin at 1% or 2% concentration for cutaneous angiofibromas

 

Systemic rapamycin may be useful in the therapy of visceral tumours and neurological complication

 

Neurosurgery : for obstructive hydrocephalus

 

Or microsurgical removal of brain neoplasm.

 

🔰Prognosis

3% die in 1st yr

28% < 10 yr

75% die before 25 yrs

 

🔰Most common cause of death??

Epilepsy and infections

🔰 For revision, only read these keys and table from rooks in which diagnostic criteria is given.

Mnemonic: COOL FAN

 

Calms 6 or more > 5 prepubertal > 15 postpubertal

 

Optic glioma

 

Osseous lesion i.e. sphenoid dysplasia or thinning of long bones

 

Leish nodules 2 or more

 

Family history (1st degree)

 

Axillary/ inguinal freckiling

 

Neurofibroma 2 or more or one plexiform neurofibroma

🟩what malignancies can b associated with NF1?Intracranial tumors:

Optic glioma

Astrocytoma

Shwanoma

Sarcomatous change in NF:

Malignant peripheral nerve sheath tumor (MPNSTs)

Others:

Wilms, rhbdomyosarcoma, leukemia, retinoblastoma, malgnant melanoma

 

 

🟩Bad prognostic factors

  1. Git, cns, urinary involvement
  2. Prepubertal increase in calms
  3. Development of malignany, HTN and endocrine abnormalities especially pheochromocytoma

 

🟩Selumitinib new drug to treat neurofibromas

It’s a mitogen activated protein kinase inhibitor,FDA approved

🔰Important note.

Such kind of keys are a great help.

Save these and thank me later.

Make a watsapp grp and keep on saving these keys with pictures.

1 month before exam close ua books and juz revise these keys. It ll not only save ua precious time but also keep u away from anxiety and tension near the exam

Follow up for malignancies👇🏻

>30 yrs   Breast

>35 yrs   Colon

>40 yrs.   Kidney

Management

🌟🌟🌟EB counselling🌟🌟🌟🌟

🔰 *Important note* EB is a really imp chap from both theory and viva exam point of view. U must revise it again n again to become fluent in answering the questions. Listen to above voice notes and then revise from tables which i have shared and then practice by solving mcqs. ETAS has a very useful mcq pool esp genetics, which makes concept clear. ​

🔰 *Excellent mneumonic of Lesch nyhan by Dr Mehran 👇🏻*

 

Leisch Nahyan ek pagal insaan hai, jo dance karta (chorea) , gata haklata (dysarthria), cd70 motorocycle (60-70 iq) per charh k sheher mein ghoomta hai, khud ko aur sab ko kat’ta phirta hai (self harm and aggresiveness) Urine bhi kardeta hai unpe (inc Uric acid), hairat angez (HRPT1 gene) aur khoonkhaar (in erythrocytes) admi hai

 

Alloo pulao (Allupurinol) khilao usko, to he stop urinating (nephropathy improves) but a pagal remains a pagal (no neurological improvement)

 

Dant nikalay to tor dijiye (teeth extraction helps self harm)

🔰 Following topics are covered much better and in detail in other chaps so dun waste ua time reading it from this chap👇🏻

  1. DNA repair defects
  2. Comel Netherton syndrome
  3. DKC
  4. Fanconi anemia

🔰 Antibody deficiencies

1️⃣ X linked agammaglobulinaemia / Bruton disease 👇🏻

🔰 DISEASES WITH IMMUNE DYSREGULATION

1️⃣ *Primary immunodeficiency with hypopigmentation*

  1. Chediak Higashi syndrome
  2. Griscelli syndrome type II
  3. Hermansky Pudlak syndrome

Already discussed in disorders of pigmentation.  So no need to repeat from here.

2️⃣ *Immunodysregulation Polyendocrinopathy enteropathy X- linked syndrome*

3️⃣ Autoimmune lymphoproliferative syndrome

🔰 CONGENITAL DEFECTS OF PHAGOCYTE FUNCTION

1️⃣ Functional neutrophil defects

2️⃣ Defects of Neutrophil differentiation

3️⃣ Defects of Neutrophil adhesion

3️⃣ Defects of Neutrophil adhesion

1️⃣ NF-KB  pathway related primary immunodeficiency

2️⃣ WHIM syndrome

3️⃣ Hyper IgE syndrome

4️⃣ Chronic mucocutaneous candidiasis

🔰 Complement disease

🔰 Complement disease

Important additions 👇🏻

🔰 *IMPORTANT NOTE*

 

For this chap, only listen to above voice notes and practice mcqs.

Reading from rooks only creates confusion.

Topics and material given above is all u need for the theory exam.

Rest of the reading should be for self pleasure only😂