A 3,112 g full-term male newborn developed stridor which got worse during crying for 12 h after birth. Chest retractions were present with inspiration. Chest X-rays showed the presence of right pneumothorax and pneumomediastinum. [ncbi.nlm.nih.gov]

C/F: M:F 1:1, CRY IS NORMAL INSPIRATORY STRIDOR: HIGH PITCH, “FLUTTERING”, WITHIN FEW DAYS OF BIRTH, OR URTI INCREASES TILL FIRST YEAR STARTS RESOLVING. SUPINE POSITION, SUCKLING, CRYING WORSENS STRIDOR IMPROVES IN PRONE POSITION 6. [slideshare.net]

[…] low-pitched cry, especially with changes of position or agitation. [revistas.unal.edu.co]

What causes abnormal cry in newborns? An abnormal cry in newborns has many possible causes. They can be broadly grouped into congenital or neurologic causes. [voicefoundation.org]

Phonation & cry are normal. [slideplayer.com]

They often cause chronic hoarseness and severe stridor. Case reports of congenital laryngeal cyst complicated with pneumothorax and pneumomediastinum are very rare. [ncbi.nlm.nih.gov]

A change in head position can modify the stridor pattern, and this may be a diagnostic clue. Early stridor detection is essential, and the clinical evaluation with endoscopy is the main investigational approach. Surgical treatment is performed. [arquivosdeorl.org.br]

Keywords Congenital malformation; Stridor; Pediatric airway; Laser surgery; Laryngeal cyst Introduction Laryngomalacia is the most common cause of stridor in the newborn, accounting for 75% of the cases [ 1 ]. [omicsonline.org]

The leading symptoms, inspiratoric stridor, cyanosis, and jugular and epigastric retractions, are caused by blockage of the airway. [ncbi.nlm.nih.gov]

The symptoms which also may include hoarseness, cyanosis and feeding problems, usually appear the first day, but may be delayed up to several weeks or even years [ 3 ]. The upper airway obstruction caused by the cyst can be potentially lethal. [omicsonline.org]

Signs of airway resistance: nasal flaring, intercostal / subcostal / supraclavicular recession, cyanosis 75 Physical Examination 3. Associated fever: inflammatory cause 4. [slideplayer.com]

At one week of age the child had inspiratory stridor that was worse with feeding and caused some cyanosis, which abated with cessation of the feeds. [thejhs.org]

Respiratory distress, failure to thrive and cyanosis are rare. Oxygen saturation should be monitored. [patient.info]

Hypocalcemia may rarely cause laryngospasm and stridor. 9 Other features include irritability, tremors, twitchings and carpopedal spasm. Psychogenic Stridor. [aafp.org]

Case Presentation Full-term newborn patient with adequate weight for gestational age, delivered via cesarean section and with polyhydramnios and APGAR 10/10. [revistas.unal.edu.co]